Home / 918,006.80-1,377,010.20-319,643.60

Finding the Fourth Proportional to 918,006.80, 1,377,010.20 and 319,643.60

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Solution

The fourth proportional to 918,006.80, 1,377,010.20 and 319,643.60 is: 479,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,006.80 : 1,377,010.20 = 319,643.60 : x
  2. Step 2: Convert to fraction form
    918,006.80/1,377,010.20 = 319,643.60/x
  3. Step 3: Cross multiply
    918,006.80x = 1,377,010.20 × 319,643.60
  4. Step 4: Simplify right side
    918,006.80x = 440,152,497,564.72
  5. Step 5: Solve for x
    x = 440,152,497,564.72/918,006.80
  6. Step 6: Final answer
    x = 479,465.40

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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.