Home / 431,570,221.60-647,355,332.40-247,148,384.80

Finding the Fourth Proportional to 431,570,221.60, 647,355,332.40 and 247,148,384.80

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Solution

The fourth proportional to 431,570,221.60, 647,355,332.40 and 247,148,384.80 is: 370,722,577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,570,221.60 : 647,355,332.40 = 247,148,384.80 : x
  2. Step 2: Convert to fraction form
    431,570,221.60/647,355,332.40 = 247,148,384.80/x
  3. Step 3: Cross multiply
    431,570,221.60x = 647,355,332.40 × 247,148,384.80
  4. Step 4: Simplify right side
    431,570,221.60x = 159,992,824,794,327,104
  5. Step 5: Solve for x
    x = 159,992,824,794,327,104/431,570,221.60
  6. Step 6: Final answer
    x = 370,722,577.20

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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.