Home / 398,986,753.39-550,635,753.70-222,808,784.40

Finding the Fourth Proportional to 398,986,753.39, 550,635,753.70 and 222,808,784.40

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Solution

The fourth proportional to 398,986,753.39, 550,635,753.70 and 222,808,784.40 is: 307,495,128.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,986,753.39 : 550,635,753.70 = 222,808,784.40 : x
  2. Step 2: Convert to fraction form
    398,986,753.39/550,635,753.70 = 222,808,784.40/x
  3. Step 3: Cross multiply
    398,986,753.39x = 550,635,753.70 × 222,808,784.40
  4. Step 4: Simplify right side
    398,986,753.39x = 122,686,482,929,353,312
  5. Step 5: Solve for x
    x = 122,686,482,929,353,312/398,986,753.39
  6. Step 6: Final answer
    x = 307,495,128.32

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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.