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Finding the Fourth Proportional to 485,592.46, 728,598.50 and 260,690.26

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Solution

The fourth proportional to 485,592.46, 728,598.50 and 260,690.26 is: 391,148.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,592.46 : 728,598.50 = 260,690.26 : x
  2. Step 2: Convert to fraction form
    485,592.46/728,598.50 = 260,690.26/x
  3. Step 3: Cross multiply
    485,592.46x = 728,598.50 × 260,690.26
  4. Step 4: Simplify right side
    485,592.46x = 189,938,532,400.61
  5. Step 5: Solve for x
    x = 189,938,532,400.61/485,592.46
  6. Step 6: Final answer
    x = 391,148.03

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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.