Home / 427,392,839.28-640,925,838.08-233,200,459.70

Finding the Fourth Proportional to 427,392,839.28, 640,925,838.08 and 233,200,459.70

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Solution

The fourth proportional to 427,392,839.28, 640,925,838.08 and 233,200,459.70 is: 349,711,521.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,392,839.28 : 640,925,838.08 = 233,200,459.70 : x
  2. Step 2: Convert to fraction form
    427,392,839.28/640,925,838.08 = 233,200,459.70/x
  3. Step 3: Cross multiply
    427,392,839.28x = 640,925,838.08 × 233,200,459.70
  4. Step 4: Simplify right side
    427,392,839.28x = 149,464,200,073,863,776
  5. Step 5: Solve for x
    x = 149,464,200,073,863,776/427,392,839.28
  6. Step 6: Final answer
    x = 349,711,521.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.