Home / 656,888,680.59-906,408,867.44-398,966,082.18

Finding the Fourth Proportional to 656,888,680.59, 906,408,867.44 and 398,966,082.18

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Solution

The fourth proportional to 656,888,680.59, 906,408,867.44 and 398,966,082.18 is: 550,513,968.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,888,680.59 : 906,408,867.44 = 398,966,082.18 : x
  2. Step 2: Convert to fraction form
    656,888,680.59/906,408,867.44 = 398,966,082.18/x
  3. Step 3: Cross multiply
    656,888,680.59x = 906,408,867.44 × 398,966,082.18
  4. Step 4: Simplify right side
    656,888,680.59x = 361,626,394,694,776,064
  5. Step 5: Solve for x
    x = 361,626,394,694,776,064/656,888,680.59
  6. Step 6: Final answer
    x = 550,513,968.93

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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.