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Finding the Fourth Proportional to 498,225.72, 687,342 and 347,410.20

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Solution

The fourth proportional to 498,225.72, 687,342 and 347,410.20 is: 479,280.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,225.72 : 687,342 = 347,410.20 : x
  2. Step 2: Convert to fraction form
    498,225.72/687,342 = 347,410.20/x
  3. Step 3: Cross multiply
    498,225.72x = 687,342 × 347,410.20
  4. Step 4: Simplify right side
    498,225.72x = 238,789,621,688.40
  5. Step 5: Solve for x
    x = 238,789,621,688.40/498,225.72
  6. Step 6: Final answer
    x = 479,280.00

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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.