Home / 692,290.80-1,038,436.20-319,042.80

Finding the Fourth Proportional to 692,290.80, 1,038,436.20 and 319,042.80

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Solution

The fourth proportional to 692,290.80, 1,038,436.20 and 319,042.80 is: 478,564.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,290.80 : 1,038,436.20 = 319,042.80 : x
  2. Step 2: Convert to fraction form
    692,290.80/1,038,436.20 = 319,042.80/x
  3. Step 3: Cross multiply
    692,290.80x = 1,038,436.20 × 319,042.80
  4. Step 4: Simplify right side
    692,290.80x = 331,305,592,869.36
  5. Step 5: Solve for x
    x = 331,305,592,869.36/692,290.80
  6. Step 6: Final answer
    x = 478,564.20

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Similar ratio
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1.5x scale

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.