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Finding the Fourth Proportional to 502,430.68, 693,354.18 and 276,090.76

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Solution

The fourth proportional to 502,430.68, 693,354.18 and 276,090.76 is: 381,005.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,430.68 : 693,354.18 = 276,090.76 : x
  2. Step 2: Convert to fraction form
    502,430.68/693,354.18 = 276,090.76/x
  3. Step 3: Cross multiply
    502,430.68x = 693,354.18 × 276,090.76
  4. Step 4: Simplify right side
    502,430.68x = 191,428,682,505.38
  5. Step 5: Solve for x
    x = 191,428,682,505.38/502,430.68
  6. Step 6: Final answer
    x = 381,005.16

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.