Home / 639,792,078.30-959,688,117.45-530,740,385.10

Finding the Fourth Proportional to 639,792,078.30, 959,688,117.45 and 530,740,385.10

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Solution

The fourth proportional to 639,792,078.30, 959,688,117.45 and 530,740,385.10 is: 796,110,577.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,792,078.30 : 959,688,117.45 = 530,740,385.10 : x
  2. Step 2: Convert to fraction form
    639,792,078.30/959,688,117.45 = 530,740,385.10/x
  3. Step 3: Cross multiply
    639,792,078.30x = 959,688,117.45 × 530,740,385.10
  4. Step 4: Simplify right side
    639,792,078.30x = 509,345,241,031,307,072
  5. Step 5: Solve for x
    x = 509,345,241,031,307,072/639,792,078.30
  6. Step 6: Final answer
    x = 796,110,577.65

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Double scale
Find fourth proportional to 639,792,079.30, 959,688,118.95 and 530,740,386.10
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.