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Finding the Fourth Proportional to 486,017.40, 729,026.10 and 434,841.60

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Solution

The fourth proportional to 486,017.40, 729,026.10 and 434,841.60 is: 652,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,017.40 : 729,026.10 = 434,841.60 : x
  2. Step 2: Convert to fraction form
    486,017.40/729,026.10 = 434,841.60/x
  3. Step 3: Cross multiply
    486,017.40x = 729,026.10 × 434,841.60
  4. Step 4: Simplify right side
    486,017.40x = 317,010,875,765.76
  5. Step 5: Solve for x
    x = 317,010,875,765.76/486,017.40
  6. Step 6: Final answer
    x = 652,262.40

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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.