Home / 672,129.20-1,008,193.80-620,807.60

Finding the Fourth Proportional to 672,129.20, 1,008,193.80 and 620,807.60

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Solution

The fourth proportional to 672,129.20, 1,008,193.80 and 620,807.60 is: 931,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,129.20 : 1,008,193.80 = 620,807.60 : x
  2. Step 2: Convert to fraction form
    672,129.20/1,008,193.80 = 620,807.60/x
  3. Step 3: Cross multiply
    672,129.20x = 1,008,193.80 × 620,807.60
  4. Step 4: Simplify right side
    672,129.20x = 625,894,373,312.88
  5. Step 5: Solve for x
    x = 625,894,373,312.88/672,129.20
  6. Step 6: Final answer
    x = 931,211.40

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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.