Home / 398,852,456.40-598,334,671.80-126,194,792.40

Finding the Fourth Proportional to 398,852,456.40, 598,334,671.80 and 126,194,792.40

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Solution

The fourth proportional to 398,852,456.40, 598,334,671.80 and 126,194,792.40 is: 189,309,902.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,852,456.40 : 598,334,671.80 = 126,194,792.40 : x
  2. Step 2: Convert to fraction form
    398,852,456.40/598,334,671.80 = 126,194,792.40/x
  3. Step 3: Cross multiply
    398,852,456.40x = 598,334,671.80 × 126,194,792.40
  4. Step 4: Simplify right side
    398,852,456.40x = 75,506,719,693,523,136
  5. Step 5: Solve for x
    x = 75,506,719,693,523,136/398,852,456.40
  6. Step 6: Final answer
    x = 189,309,902.65

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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.