Home / 651,930.40-976,729.20-402,320.80

Finding the Fourth Proportional to 651,930.40, 976,729.20 and 402,320.80

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Solution

The fourth proportional to 651,930.40, 976,729.20 and 402,320.80 is: 602,761.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,930.40 : 976,729.20 = 402,320.80 : x
  2. Step 2: Convert to fraction form
    651,930.40/976,729.20 = 402,320.80/x
  3. Step 3: Cross multiply
    651,930.40x = 976,729.20 × 402,320.80
  4. Step 4: Simplify right side
    651,930.40x = 392,958,473,127.36
  5. Step 5: Solve for x
    x = 392,958,473,127.36/651,930.40
  6. Step 6: Final answer
    x = 602,761.39

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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.