Home / 890,815.32-1,229,272.20-528,273.36

Finding the Fourth Proportional to 890,815.32, 1,229,272.20 and 528,273.36

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Solution

The fourth proportional to 890,815.32, 1,229,272.20 and 528,273.36 is: 728,985.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,815.32 : 1,229,272.20 = 528,273.36 : x
  2. Step 2: Convert to fraction form
    890,815.32/1,229,272.20 = 528,273.36/x
  3. Step 3: Cross multiply
    890,815.32x = 1,229,272.20 × 528,273.36
  4. Step 4: Simplify right side
    890,815.32x = 649,391,755,448.59
  5. Step 5: Solve for x
    x = 649,391,755,448.59/890,815.32
  6. Step 6: Final answer
    x = 728,985.84

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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.