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Finding the Fourth Proportional to 485,411.40, 728,000.46 and 248,632.20

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Solution

The fourth proportional to 485,411.40, 728,000.46 and 248,632.20 is: 372,888.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,411.40 : 728,000.46 = 248,632.20 : x
  2. Step 2: Convert to fraction form
    485,411.40/728,000.46 = 248,632.20/x
  3. Step 3: Cross multiply
    485,411.40x = 728,000.46 × 248,632.20
  4. Step 4: Simplify right side
    485,411.40x = 181,004,355,970.81
  5. Step 5: Solve for x
    x = 181,004,355,970.81/485,411.40
  6. Step 6: Final answer
    x = 372,888.56

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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.