Home / 887,456.90-1,330,278.15-437,485.70

Finding the Fourth Proportional to 887,456.90, 1,330,278.15 and 437,485.70

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Solution

The fourth proportional to 887,456.90, 1,330,278.15 and 437,485.70 is: 655,781.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,456.90 : 1,330,278.15 = 437,485.70 : x
  2. Step 2: Convert to fraction form
    887,456.90/1,330,278.15 = 437,485.70/x
  3. Step 3: Cross multiply
    887,456.90x = 1,330,278.15 × 437,485.70
  4. Step 4: Simplify right side
    887,456.90x = 581,977,667,647.46
  5. Step 5: Solve for x
    x = 581,977,667,647.46/887,456.90
  6. Step 6: Final answer
    x = 655,781.33

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1.5x scale

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.