Home / 726,511.04-1,002,569.60-420,600.40

Finding the Fourth Proportional to 726,511.04, 1,002,569.60 and 420,600.40

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Solution

The fourth proportional to 726,511.04, 1,002,569.60 and 420,600.40 is: 580,419.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,511.04 : 1,002,569.60 = 420,600.40 : x
  2. Step 2: Convert to fraction form
    726,511.04/1,002,569.60 = 420,600.40/x
  3. Step 3: Cross multiply
    726,511.04x = 1,002,569.60 × 420,600.40
  4. Step 4: Simplify right side
    726,511.04x = 421,681,174,787.84
  5. Step 5: Solve for x
    x = 421,681,174,787.84/726,511.04
  6. Step 6: Final answer
    x = 580,419.50

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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.