Home / 1,017,780.80-1,527,254.40-387,147.20

Finding the Fourth Proportional to 1,017,780.80, 1,527,254.40 and 387,147.20

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Solution

The fourth proportional to 1,017,780.80, 1,527,254.40 and 387,147.20 is: 580,942.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017,780.80 : 1,527,254.40 = 387,147.20 : x
  2. Step 2: Convert to fraction form
    1,017,780.80/1,527,254.40 = 387,147.20/x
  3. Step 3: Cross multiply
    1,017,780.80x = 1,527,254.40 × 387,147.20
  4. Step 4: Simplify right side
    1,017,780.80x = 591,272,264,647.68
  5. Step 5: Solve for x
    x = 591,272,264,647.68/1,017,780.80
  6. Step 6: Final answer
    x = 580,942.64

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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.