Home / 579,530.40-868,129.20-402,237.60

Finding the Fourth Proportional to 579,530.40, 868,129.20 and 402,237.60

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Solution

The fourth proportional to 579,530.40, 868,129.20 and 402,237.60 is: 602,546.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,530.40 : 868,129.20 = 402,237.60 : x
  2. Step 2: Convert to fraction form
    579,530.40/868,129.20 = 402,237.60/x
  3. Step 3: Cross multiply
    579,530.40x = 868,129.20 × 402,237.60
  4. Step 4: Simplify right side
    579,530.40x = 349,194,205,897.92
  5. Step 5: Solve for x
    x = 349,194,205,897.92/579,530.40
  6. Step 6: Final answer
    x = 602,546.83

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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.