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Finding the Fourth Proportional to 724,534.20, 999,861.57 and 397,861.20

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Solution

The fourth proportional to 724,534.20, 999,861.57 and 397,861.20 is: 549,050.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,534.20 : 999,861.57 = 397,861.20 : x
  2. Step 2: Convert to fraction form
    724,534.20/999,861.57 = 397,861.20/x
  3. Step 3: Cross multiply
    724,534.20x = 999,861.57 × 397,861.20
  4. Step 4: Simplify right side
    724,534.20x = 397,806,124,074.08
  5. Step 5: Solve for x
    x = 397,806,124,074.08/724,534.20
  6. Step 6: Final answer
    x = 549,050.86

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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.