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Finding the Fourth Proportional to 655,565,861.70, 983,348,792.55 and 509,207,010.30

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Solution

The fourth proportional to 655,565,861.70, 983,348,792.55 and 509,207,010.30 is: 763,810,515.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,565,861.70 : 983,348,792.55 = 509,207,010.30 : x
  2. Step 2: Convert to fraction form
    655,565,861.70/983,348,792.55 = 509,207,010.30/x
  3. Step 3: Cross multiply
    655,565,861.70x = 983,348,792.55 × 509,207,010.30
  4. Step 4: Simplify right side
    655,565,861.70x = 500,728,098,736,500,416
  5. Step 5: Solve for x
    x = 500,728,098,736,500,416/655,565,861.70
  6. Step 6: Final answer
    x = 763,810,515.45

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Double scale
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Similar ratio
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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.