Home / 1,004,644.81-1,386,061.23-642,280.78

Finding the Fourth Proportional to 1,004,644.81, 1,386,061.23 and 642,280.78

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Solution

The fourth proportional to 1,004,644.81, 1,386,061.23 and 642,280.78 is: 886,124.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004,644.81 : 1,386,061.23 = 642,280.78 : x
  2. Step 2: Convert to fraction form
    1,004,644.81/1,386,061.23 = 642,280.78/x
  3. Step 3: Cross multiply
    1,004,644.81x = 1,386,061.23 × 642,280.78
  4. Step 4: Simplify right side
    1,004,644.81x = 890,240,487,932.16
  5. Step 5: Solve for x
    x = 890,240,487,932.16/1,004,644.81
  6. Step 6: Final answer
    x = 886,124.61

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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.