Home / 649,979.28-896,999.40-363,499.20

Finding the Fourth Proportional to 649,979.28, 896,999.40 and 363,499.20

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Solution

The fourth proportional to 649,979.28, 896,999.40 and 363,499.20 is: 501,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,979.28 : 896,999.40 = 363,499.20 : x
  2. Step 2: Convert to fraction form
    649,979.28/896,999.40 = 363,499.20/x
  3. Step 3: Cross multiply
    649,979.28x = 896,999.40 × 363,499.20
  4. Step 4: Simplify right side
    649,979.28x = 326,058,564,300.48
  5. Step 5: Solve for x
    x = 326,058,564,300.48/649,979.28
  6. Step 6: Final answer
    x = 501,644.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.