Home / 1,240,386.62-1,859,398.94-398,347.88

Finding the Fourth Proportional to 1,240,386.62, 1,859,398.94 and 398,347.88

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Solution

The fourth proportional to 1,240,386.62, 1,859,398.94 and 398,347.88 is: 597,142.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,386.62 : 1,859,398.94 = 398,347.88 : x
  2. Step 2: Convert to fraction form
    1,240,386.62/1,859,398.94 = 398,347.88/x
  3. Step 3: Cross multiply
    1,240,386.62x = 1,859,398.94 × 398,347.88
  4. Step 4: Simplify right side
    1,240,386.62x = 740,687,617,522.12
  5. Step 5: Solve for x
    x = 740,687,617,522.12/1,240,386.62
  6. Step 6: Final answer
    x = 597,142.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.