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Finding the Fourth Proportional to 498,309.40, 747,464.10 and 436,101.40

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Solution

The fourth proportional to 498,309.40, 747,464.10 and 436,101.40 is: 654,152.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,309.40 : 747,464.10 = 436,101.40 : x
  2. Step 2: Convert to fraction form
    498,309.40/747,464.10 = 436,101.40/x
  3. Step 3: Cross multiply
    498,309.40x = 747,464.10 × 436,101.40
  4. Step 4: Simplify right side
    498,309.40x = 325,970,140,459.74
  5. Step 5: Solve for x
    x = 325,970,140,459.74/498,309.40
  6. Step 6: Final answer
    x = 654,152.10

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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.