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Finding the Fourth Proportional to 887,808.88, 1,225,181.40 and 485,400.88

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Solution

The fourth proportional to 887,808.88, 1,225,181.40 and 485,400.88 is: 669,856.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,808.88 : 1,225,181.40 = 485,400.88 : x
  2. Step 2: Convert to fraction form
    887,808.88/1,225,181.40 = 485,400.88/x
  3. Step 3: Cross multiply
    887,808.88x = 1,225,181.40 × 485,400.88
  4. Step 4: Simplify right side
    887,808.88x = 594,704,129,719.63
  5. Step 5: Solve for x
    x = 594,704,129,719.63/887,808.88
  6. Step 6: Final answer
    x = 669,856.03

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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.