Home / 666,905.60-1,000,358.40-611,793.20

Finding the Fourth Proportional to 666,905.60, 1,000,358.40 and 611,793.20

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Solution

The fourth proportional to 666,905.60, 1,000,358.40 and 611,793.20 is: 917,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,905.60 : 1,000,358.40 = 611,793.20 : x
  2. Step 2: Convert to fraction form
    666,905.60/1,000,358.40 = 611,793.20/x
  3. Step 3: Cross multiply
    666,905.60x = 1,000,358.40 × 611,793.20
  4. Step 4: Simplify right side
    666,905.60x = 612,012,466,682.88
  5. Step 5: Solve for x
    x = 612,012,466,682.88/666,905.60
  6. Step 6: Final answer
    x = 917,689.80

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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.