Home / 918,008.70-1,377,207.45-278,259.90

Finding the Fourth Proportional to 918,008.70, 1,377,207.45 and 278,259.90

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Solution

The fourth proportional to 918,008.70, 1,377,207.45 and 278,259.90 is: 417,448.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,008.70 : 1,377,207.45 = 278,259.90 : x
  2. Step 2: Convert to fraction form
    918,008.70/1,377,207.45 = 278,259.90/x
  3. Step 3: Cross multiply
    918,008.70x = 1,377,207.45 × 278,259.90
  4. Step 4: Simplify right side
    918,008.70x = 383,221,607,316.26
  5. Step 5: Solve for x
    x = 383,221,607,316.26/918,008.70
  6. Step 6: Final answer
    x = 417,448.78

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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.