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Finding the Fourth Proportional to 515,547.90, 773,321.85 and 461,310.30

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Solution

The fourth proportional to 515,547.90, 773,321.85 and 461,310.30 is: 691,965.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,547.90 : 773,321.85 = 461,310.30 : x
  2. Step 2: Convert to fraction form
    515,547.90/773,321.85 = 461,310.30/x
  3. Step 3: Cross multiply
    515,547.90x = 773,321.85 × 461,310.30
  4. Step 4: Simplify right side
    515,547.90x = 356,741,334,620.06
  5. Step 5: Solve for x
    x = 356,741,334,620.06/515,547.90
  6. Step 6: Final answer
    x = 691,965.45

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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.