Home / 521,454,278.40-782,181,417.60-513,392,121.60

Finding the Fourth Proportional to 521,454,278.40, 782,181,417.60 and 513,392,121.60

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Solution

The fourth proportional to 521,454,278.40, 782,181,417.60 and 513,392,121.60 is: 770,088,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,454,278.40 : 782,181,417.60 = 513,392,121.60 : x
  2. Step 2: Convert to fraction form
    521,454,278.40/782,181,417.60 = 513,392,121.60/x
  3. Step 3: Cross multiply
    521,454,278.40x = 782,181,417.60 × 513,392,121.60
  4. Step 4: Simplify right side
    521,454,278.40x = 401,565,777,457,759,616
  5. Step 5: Solve for x
    x = 401,565,777,457,759,616/521,454,278.40
  6. Step 6: Final answer
    x = 770,088,182.40

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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.