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Finding the Fourth Proportional to 515,411.60, 773,117.40 and 304,941.20

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Solution

The fourth proportional to 515,411.60, 773,117.40 and 304,941.20 is: 457,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,411.60 : 773,117.40 = 304,941.20 : x
  2. Step 2: Convert to fraction form
    515,411.60/773,117.40 = 304,941.20/x
  3. Step 3: Cross multiply
    515,411.60x = 773,117.40 × 304,941.20
  4. Step 4: Simplify right side
    515,411.60x = 235,755,347,696.88
  5. Step 5: Solve for x
    x = 235,755,347,696.88/515,411.60
  6. Step 6: Final answer
    x = 457,411.80

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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.