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Finding the Fourth Proportional to 877,242.01, 1,315,910 and 278,248.63

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Solution

The fourth proportional to 877,242.01, 1,315,910 and 278,248.63 is: 417,387.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,242.01 : 1,315,910 = 278,248.63 : x
  2. Step 2: Convert to fraction form
    877,242.01/1,315,910 = 278,248.63/x
  3. Step 3: Cross multiply
    877,242.01x = 1,315,910 × 278,248.63
  4. Step 4: Simplify right side
    877,242.01x = 366,150,154,703.30
  5. Step 5: Solve for x
    x = 366,150,154,703.30/877,242.01
  6. Step 6: Final answer
    x = 417,387.85

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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.