Home / 1,230,221.60-1,845,332.40-389,031.20

Finding the Fourth Proportional to 1,230,221.60, 1,845,332.40 and 389,031.20

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Solution

The fourth proportional to 1,230,221.60, 1,845,332.40 and 389,031.20 is: 583,546.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,221.60 : 1,845,332.40 = 389,031.20 : x
  2. Step 2: Convert to fraction form
    1,230,221.60/1,845,332.40 = 389,031.20/x
  3. Step 3: Cross multiply
    1,230,221.60x = 1,845,332.40 × 389,031.20
  4. Step 4: Simplify right side
    1,230,221.60x = 717,891,877,970.88
  5. Step 5: Solve for x
    x = 717,891,877,970.88/1,230,221.60
  6. Step 6: Final answer
    x = 583,546.80

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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.