Home / 991,111.40-1,486,667.10-822,967.55

Finding the Fourth Proportional to 991,111.40, 1,486,667.10 and 822,967.55

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Solution

The fourth proportional to 991,111.40, 1,486,667.10 and 822,967.55 is: 1,234,451.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,111.40 : 1,486,667.10 = 822,967.55 : x
  2. Step 2: Convert to fraction form
    991,111.40/1,486,667.10 = 822,967.55/x
  3. Step 3: Cross multiply
    991,111.40x = 1,486,667.10 × 822,967.55
  4. Step 4: Simplify right side
    991,111.40x = 1,223,478,780,952.61
  5. Step 5: Solve for x
    x = 1,223,478,780,952.61/991,111.40
  6. Step 6: Final answer
    x = 1,234,451.33

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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.