Home / 676,205.72-933,164.28-421,557.92

Finding the Fourth Proportional to 676,205.72, 933,164.28 and 421,557.92

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Solution

The fourth proportional to 676,205.72, 933,164.28 and 421,557.92 is: 581,750.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,205.72 : 933,164.28 = 421,557.92 : x
  2. Step 2: Convert to fraction form
    676,205.72/933,164.28 = 421,557.92/x
  3. Step 3: Cross multiply
    676,205.72x = 933,164.28 × 421,557.92
  4. Step 4: Simplify right side
    676,205.72x = 393,382,792,895.10
  5. Step 5: Solve for x
    x = 393,382,792,895.10/676,205.72
  6. Step 6: Final answer
    x = 581,750.17

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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.