Home / 579,764.40-868,480.20-402,471.60

Finding the Fourth Proportional to 579,764.40, 868,480.20 and 402,471.60

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Solution

The fourth proportional to 579,764.40, 868,480.20 and 402,471.60 is: 602,897.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,764.40 : 868,480.20 = 402,471.60 : x
  2. Step 2: Convert to fraction form
    579,764.40/868,480.20 = 402,471.60/x
  3. Step 3: Cross multiply
    579,764.40x = 868,480.20 × 402,471.60
  4. Step 4: Simplify right side
    579,764.40x = 349,538,615,662.32
  5. Step 5: Solve for x
    x = 349,538,615,662.32/579,764.40
  6. Step 6: Final answer
    x = 602,897.69

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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.