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Finding the Fourth Proportional to 485,762.66, 728,004.26 and 272,526.50

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Solution

The fourth proportional to 485,762.66, 728,004.26 and 272,526.50 is: 408,430.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,762.66 : 728,004.26 = 272,526.50 : x
  2. Step 2: Convert to fraction form
    485,762.66/728,004.26 = 272,526.50/x
  3. Step 3: Cross multiply
    485,762.66x = 728,004.26 × 272,526.50
  4. Step 4: Simplify right side
    485,762.66x = 198,400,452,962.89
  5. Step 5: Solve for x
    x = 198,400,452,962.89/485,762.66
  6. Step 6: Final answer
    x = 408,430.84

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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.