Home / 1,217,340,127.20-1,679,932,631.34-660,423,174.26

Finding the Fourth Proportional to 1,217,340,127.20, 1,679,932,631.34 and 660,423,174.26

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Solution

The fourth proportional to 1,217,340,127.20, 1,679,932,631.34 and 660,423,174.26 is: 911,385,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,340,127.20 : 1,679,932,631.34 = 660,423,174.26 : x
  2. Step 2: Convert to fraction form
    1,217,340,127.20/1,679,932,631.34 = 660,423,174.26/x
  3. Step 3: Cross multiply
    1,217,340,127.20x = 1,679,932,631.34 × 660,423,174.26
  4. Step 4: Simplify right side
    1,217,340,127.20x = 1,109,466,440,932,517,120
  5. Step 5: Solve for x
    x = 1,109,466,440,932,517,120/1,217,340,127.20
  6. Step 6: Final answer
    x = 911,385,746.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.