Home / 742,849.96-1,025,156.10-420,554.20

Finding the Fourth Proportional to 742,849.96, 1,025,156.10 and 420,554.20

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Solution

The fourth proportional to 742,849.96, 1,025,156.10 and 420,554.20 is: 580,377.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,849.96 : 1,025,156.10 = 420,554.20 : x
  2. Step 2: Convert to fraction form
    742,849.96/1,025,156.10 = 420,554.20/x
  3. Step 3: Cross multiply
    742,849.96x = 1,025,156.10 × 420,554.20
  4. Step 4: Simplify right side
    742,849.96x = 431,133,703,510.62
  5. Step 5: Solve for x
    x = 431,133,703,510.62/742,849.96
  6. Step 6: Final answer
    x = 580,377.90

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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.