Home / 742,890.16-1,025,251.88-420,657.04

Finding the Fourth Proportional to 742,890.16, 1,025,251.88 and 420,657.04

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Solution

The fourth proportional to 742,890.16, 1,025,251.88 and 420,657.04 is: 580,542.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,890.16 : 1,025,251.88 = 420,657.04 : x
  2. Step 2: Convert to fraction form
    742,890.16/1,025,251.88 = 420,657.04/x
  3. Step 3: Cross multiply
    742,890.16x = 1,025,251.88 × 420,657.04
  4. Step 4: Simplify right side
    742,890.16x = 431,279,421,095.24
  5. Step 5: Solve for x
    x = 431,279,421,095.24/742,890.16
  6. Step 6: Final answer
    x = 580,542.65

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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.