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Finding the Fourth Proportional to 534,165.40, 801,248.10 and 429,189.40

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Solution

The fourth proportional to 534,165.40, 801,248.10 and 429,189.40 is: 643,784.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,165.40 : 801,248.10 = 429,189.40 : x
  2. Step 2: Convert to fraction form
    534,165.40/801,248.10 = 429,189.40/x
  3. Step 3: Cross multiply
    534,165.40x = 801,248.10 × 429,189.40
  4. Step 4: Simplify right side
    534,165.40x = 343,887,191,290.14
  5. Step 5: Solve for x
    x = 343,887,191,290.14/534,165.40
  6. Step 6: Final answer
    x = 643,784.10

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