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Finding the Fourth Proportional to 587,999.70, 881,999.55 and 455,289.30

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Solution

The fourth proportional to 587,999.70, 881,999.55 and 455,289.30 is: 682,933.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,999.70 : 881,999.55 = 455,289.30 : x
  2. Step 2: Convert to fraction form
    587,999.70/881,999.55 = 455,289.30/x
  3. Step 3: Cross multiply
    587,999.70x = 881,999.55 × 455,289.30
  4. Step 4: Simplify right side
    587,999.70x = 401,564,957,719.82
  5. Step 5: Solve for x
    x = 401,564,957,719.82/587,999.70
  6. Step 6: Final answer
    x = 682,933.95

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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.