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Finding the Fourth Proportional to 587,999.80, 881,999.70 and 422,111.80

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Solution

The fourth proportional to 587,999.80, 881,999.70 and 422,111.80 is: 633,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,999.80 : 881,999.70 = 422,111.80 : x
  2. Step 2: Convert to fraction form
    587,999.80/881,999.70 = 422,111.80/x
  3. Step 3: Cross multiply
    587,999.80x = 881,999.70 × 422,111.80
  4. Step 4: Simplify right side
    587,999.80x = 372,302,480,966.46
  5. Step 5: Solve for x
    x = 372,302,480,966.46/587,999.80
  6. Step 6: Final answer
    x = 633,167.70

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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.