Home / 418,565,521.20-627,848,281.80-127,430,331.60

Finding the Fourth Proportional to 418,565,521.20, 627,848,281.80 and 127,430,331.60

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Solution

The fourth proportional to 418,565,521.20, 627,848,281.80 and 127,430,331.60 is: 191,145,497.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,565,521.20 : 627,848,281.80 = 127,430,331.60 : x
  2. Step 2: Convert to fraction form
    418,565,521.20/627,848,281.80 = 127,430,331.60/x
  3. Step 3: Cross multiply
    418,565,521.20x = 627,848,281.80 × 127,430,331.60
  4. Step 4: Simplify right side
    418,565,521.20x = 80,006,914,744,264,240
  5. Step 5: Solve for x
    x = 80,006,914,744,264,240/418,565,521.20
  6. Step 6: Final answer
    x = 191,145,497.40

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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.