Home / 639,792,142.80-959,688,214.20-530,740,449.60

Finding the Fourth Proportional to 639,792,142.80, 959,688,214.20 and 530,740,449.60

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Solution

The fourth proportional to 639,792,142.80, 959,688,214.20 and 530,740,449.60 is: 796,110,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,792,142.80 : 959,688,214.20 = 530,740,449.60 : x
  2. Step 2: Convert to fraction form
    639,792,142.80/959,688,214.20 = 530,740,449.60/x
  3. Step 3: Cross multiply
    639,792,142.80x = 959,688,214.20 × 530,740,449.60
  4. Step 4: Simplify right side
    639,792,142.80x = 509,345,354,280,329,152
  5. Step 5: Solve for x
    x = 509,345,354,280,329,152/639,792,142.80
  6. Step 6: Final answer
    x = 796,110,674.40

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Half scale
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Double scale
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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.