Home / 687,741.30-1,029,643.65-609,009.30

Finding the Fourth Proportional to 687,741.30, 1,029,643.65 and 609,009.30

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Solution

The fourth proportional to 687,741.30, 1,029,643.65 and 609,009.30 is: 911,770.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,741.30 : 1,029,643.65 = 609,009.30 : x
  2. Step 2: Convert to fraction form
    687,741.30/1,029,643.65 = 609,009.30/x
  3. Step 3: Cross multiply
    687,741.30x = 1,029,643.65 × 609,009.30
  4. Step 4: Simplify right side
    687,741.30x = 627,062,558,535.95
  5. Step 5: Solve for x
    x = 627,062,558,535.95/687,741.30
  6. Step 6: Final answer
    x = 911,770.98

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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.