Home / 780,575.31-1,171,925.17-439,259.86

Finding the Fourth Proportional to 780,575.31, 1,171,925.17 and 439,259.86

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Solution

The fourth proportional to 780,575.31, 1,171,925.17 and 439,259.86 is: 659,487.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,575.31 : 1,171,925.17 = 439,259.86 : x
  2. Step 2: Convert to fraction form
    780,575.31/1,171,925.17 = 439,259.86/x
  3. Step 3: Cross multiply
    780,575.31x = 1,171,925.17 × 439,259.86
  4. Step 4: Simplify right side
    780,575.31x = 514,779,689,560.00
  5. Step 5: Solve for x
    x = 514,779,689,560.00/780,575.31
  6. Step 6: Final answer
    x = 659,487.54

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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.