Home / 972,439.80-1,342,042.92-542,784.42

Finding the Fourth Proportional to 972,439.80, 1,342,042.92 and 542,784.42

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Solution

The fourth proportional to 972,439.80, 1,342,042.92 and 542,784.42 is: 749,084.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    972,439.80 : 1,342,042.92 = 542,784.42 : x
  2. Step 2: Convert to fraction form
    972,439.80/1,342,042.92 = 542,784.42/x
  3. Step 3: Cross multiply
    972,439.80x = 1,342,042.92 × 542,784.42
  4. Step 4: Simplify right side
    972,439.80x = 728,439,987,947.31
  5. Step 5: Solve for x
    x = 728,439,987,947.31/972,439.80
  6. Step 6: Final answer
    x = 749,084.92

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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.