Home / 1,217,941,733.40-1,680,761,213.88-661,024,780.44

Finding the Fourth Proportional to 1,217,941,733.40, 1,680,761,213.88 and 661,024,780.44

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Solution

The fourth proportional to 1,217,941,733.40, 1,680,761,213.88 and 661,024,780.44 is: 912,215,077.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,941,733.40 : 1,680,761,213.88 = 661,024,780.44 : x
  2. Step 2: Convert to fraction form
    1,217,941,733.40/1,680,761,213.88 = 661,024,780.44/x
  3. Step 3: Cross multiply
    1,217,941,733.40x = 1,680,761,213.88 × 661,024,780.44
  4. Step 4: Simplify right side
    1,217,941,733.40x = 1,111,024,812,377,095,040
  5. Step 5: Solve for x
    x = 1,111,024,812,377,095,040/1,217,941,733.40
  6. Step 6: Final answer
    x = 912,215,077.22

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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.