Home / 1,217,941,737.40-1,680,761,219.40-661,024,784.44

Finding the Fourth Proportional to 1,217,941,737.40, 1,680,761,219.40 and 661,024,784.44

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Solution

The fourth proportional to 1,217,941,737.40, 1,680,761,219.40 and 661,024,784.44 is: 912,215,082.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,941,737.40 : 1,680,761,219.40 = 661,024,784.44 : x
  2. Step 2: Convert to fraction form
    1,217,941,737.40/1,680,761,219.40 = 661,024,784.44/x
  3. Step 3: Cross multiply
    1,217,941,737.40x = 1,680,761,219.40 × 661,024,784.44
  4. Step 4: Simplify right side
    1,217,941,737.40x = 1,111,024,822,748,996,736
  5. Step 5: Solve for x
    x = 1,111,024,822,748,996,736/1,217,941,737.40
  6. Step 6: Final answer
    x = 912,215,082.74

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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.