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Finding the Fourth Proportional to 514,906.40, 772,359.60 and 346,507.40

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Solution

The fourth proportional to 514,906.40, 772,359.60 and 346,507.40 is: 519,761.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,906.40 : 772,359.60 = 346,507.40 : x
  2. Step 2: Convert to fraction form
    514,906.40/772,359.60 = 346,507.40/x
  3. Step 3: Cross multiply
    514,906.40x = 772,359.60 × 346,507.40
  4. Step 4: Simplify right side
    514,906.40x = 267,628,316,861.04
  5. Step 5: Solve for x
    x = 267,628,316,861.04/514,906.40
  6. Step 6: Final answer
    x = 519,761.10

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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.