Home / 457,729,792.80-686,594,689.20-407,565,261.60

Finding the Fourth Proportional to 457,729,792.80, 686,594,689.20 and 407,565,261.60

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Solution

The fourth proportional to 457,729,792.80, 686,594,689.20 and 407,565,261.60 is: 611,347,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,729,792.80 : 686,594,689.20 = 407,565,261.60 : x
  2. Step 2: Convert to fraction form
    457,729,792.80/686,594,689.20 = 407,565,261.60/x
  3. Step 3: Cross multiply
    457,729,792.80x = 686,594,689.20 × 407,565,261.60
  4. Step 4: Simplify right side
    457,729,792.80x = 279,832,144,116,968,736
  5. Step 5: Solve for x
    x = 279,832,144,116,968,736/457,729,792.80
  6. Step 6: Final answer
    x = 611,347,892.40

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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.