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Finding the Fourth Proportional to 518,323,073.15, 777,484,609.73 and 503,974,166.15

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Solution

The fourth proportional to 518,323,073.15, 777,484,609.73 and 503,974,166.15 is: 755,961,249.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,323,073.15 : 777,484,609.73 = 503,974,166.15 : x
  2. Step 2: Convert to fraction form
    518,323,073.15/777,484,609.73 = 503,974,166.15/x
  3. Step 3: Cross multiply
    518,323,073.15x = 777,484,609.73 × 503,974,166.15
  4. Step 4: Simplify right side
    518,323,073.15x = 391,832,157,880,615,040
  5. Step 5: Solve for x
    x = 391,832,157,880,615,040/518,323,073.15
  6. Step 6: Final answer
    x = 755,961,249.23

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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.