Home / 354,359,848.60-531,539,772.90-280,383,261.40

Finding the Fourth Proportional to 354,359,848.60, 531,539,772.90 and 280,383,261.40

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Solution

The fourth proportional to 354,359,848.60, 531,539,772.90 and 280,383,261.40 is: 420,574,892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,359,848.60 : 531,539,772.90 = 280,383,261.40 : x
  2. Step 2: Convert to fraction form
    354,359,848.60/531,539,772.90 = 280,383,261.40/x
  3. Step 3: Cross multiply
    354,359,848.60x = 531,539,772.90 × 280,383,261.40
  4. Step 4: Simplify right side
    354,359,848.60x = 149,034,855,089,517,312
  5. Step 5: Solve for x
    x = 149,034,855,089,517,312/354,359,848.60
  6. Step 6: Final answer
    x = 420,574,892.10

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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.