Home / 726,643.55-1,002,702.92-420,740.58

Finding the Fourth Proportional to 726,643.55, 1,002,702.92 and 420,740.58

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Solution

The fourth proportional to 726,643.55, 1,002,702.92 and 420,740.58 is: 580,584.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,643.55 : 1,002,702.92 = 420,740.58 : x
  2. Step 2: Convert to fraction form
    726,643.55/1,002,702.92 = 420,740.58/x
  3. Step 3: Cross multiply
    726,643.55x = 1,002,702.92 × 420,740.58
  4. Step 4: Simplify right side
    726,643.55x = 421,877,806,024.79
  5. Step 5: Solve for x
    x = 421,877,806,024.79/726,643.55
  6. Step 6: Final answer
    x = 580,584.26

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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.