Home / 639,792,140.30-959,688,210.45-530,740,447.10

Finding the Fourth Proportional to 639,792,140.30, 959,688,210.45 and 530,740,447.10

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Solution

The fourth proportional to 639,792,140.30, 959,688,210.45 and 530,740,447.10 is: 796,110,670.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,792,140.30 : 959,688,210.45 = 530,740,447.10 : x
  2. Step 2: Convert to fraction form
    639,792,140.30/959,688,210.45 = 530,740,447.10/x
  3. Step 3: Cross multiply
    639,792,140.30x = 959,688,210.45 × 530,740,447.10
  4. Step 4: Simplify right side
    639,792,140.30x = 509,345,349,890,831,936
  5. Step 5: Solve for x
    x = 509,345,349,890,831,936/639,792,140.30
  6. Step 6: Final answer
    x = 796,110,670.65

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Half scale
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Double scale
Find fourth proportional to 639,792,141.30, 959,688,211.95 and 530,740,448.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.