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Finding the Fourth Proportional to 819,103.68, 1,130,428.80 and 456,644.88

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Solution

The fourth proportional to 819,103.68, 1,130,428.80 and 456,644.88 is: 630,206.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,103.68 : 1,130,428.80 = 456,644.88 : x
  2. Step 2: Convert to fraction form
    819,103.68/1,130,428.80 = 456,644.88/x
  3. Step 3: Cross multiply
    819,103.68x = 1,130,428.80 × 456,644.88
  4. Step 4: Simplify right side
    819,103.68x = 516,204,523,724.54
  5. Step 5: Solve for x
    x = 516,204,523,724.54/819,103.68
  6. Step 6: Final answer
    x = 630,206.57

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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.