Home / 1,120,369,437.60-1,679,420,415.60-660,070,672.80

Finding the Fourth Proportional to 1,120,369,437.60, 1,679,420,415.60 and 660,070,672.80

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Solution

The fourth proportional to 1,120,369,437.60, 1,679,420,415.60 and 660,070,672.80 is: 989,438,060.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,369,437.60 : 1,679,420,415.60 = 660,070,672.80 : x
  2. Step 2: Convert to fraction form
    1,120,369,437.60/1,679,420,415.60 = 660,070,672.80/x
  3. Step 3: Cross multiply
    1,120,369,437.60x = 1,679,420,415.60 × 660,070,672.80
  4. Step 4: Simplify right side
    1,120,369,437.60x = 1,108,536,163,639,147,520
  5. Step 5: Solve for x
    x = 1,108,536,163,639,147,520/1,120,369,437.60
  6. Step 6: Final answer
    x = 989,438,060.73

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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.