Home / 434,397.12-648,624.42-389,126.22

Finding the Fourth Proportional to 434,397.12, 648,624.42 and 389,126.22

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Solution

The fourth proportional to 434,397.12, 648,624.42 and 389,126.22 is: 581,027.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,397.12 : 648,624.42 = 389,126.22 : x
  2. Step 2: Convert to fraction form
    434,397.12/648,624.42 = 389,126.22/x
  3. Step 3: Cross multiply
    434,397.12x = 648,624.42 × 389,126.22
  4. Step 4: Simplify right side
    434,397.12x = 252,396,768,754.29
  5. Step 5: Solve for x
    x = 252,396,768,754.29/434,397.12
  6. Step 6: Final answer
    x = 581,027.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.