Home / 687,747.30-1,029,652.65-609,015.30

Finding the Fourth Proportional to 687,747.30, 1,029,652.65 and 609,015.30

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Solution

The fourth proportional to 687,747.30, 1,029,652.65 and 609,015.30 is: 911,779.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,747.30 : 1,029,652.65 = 609,015.30 : x
  2. Step 2: Convert to fraction form
    687,747.30/1,029,652.65 = 609,015.30/x
  3. Step 3: Cross multiply
    687,747.30x = 1,029,652.65 × 609,015.30
  4. Step 4: Simplify right side
    687,747.30x = 627,074,217,535.55
  5. Step 5: Solve for x
    x = 627,074,217,535.55/687,747.30
  6. Step 6: Final answer
    x = 911,779.98

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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.