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Finding the Fourth Proportional to 972,957.21, 1,458,251.37 and 688,728.30

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Solution

The fourth proportional to 972,957.21, 1,458,251.37 and 688,728.30 is: 1,032,254.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    972,957.21 : 1,458,251.37 = 688,728.30 : x
  2. Step 2: Convert to fraction form
    972,957.21/1,458,251.37 = 688,728.30/x
  3. Step 3: Cross multiply
    972,957.21x = 1,458,251.37 × 688,728.30
  4. Step 4: Simplify right side
    972,957.21x = 1,004,338,987,032.77
  5. Step 5: Solve for x
    x = 1,004,338,987,032.77/972,957.21
  6. Step 6: Final answer
    x = 1,032,254.02

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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.