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Finding the Fourth Proportional to 819,888.74, 1,229,439.45 and 464,807.42

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Solution

The fourth proportional to 819,888.74, 1,229,439.45 and 464,807.42 is: 696,987.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,888.74 : 1,229,439.45 = 464,807.42 : x
  2. Step 2: Convert to fraction form
    819,888.74/1,229,439.45 = 464,807.42/x
  3. Step 3: Cross multiply
    819,888.74x = 1,229,439.45 × 464,807.42
  4. Step 4: Simplify right side
    819,888.74x = 571,452,578,800.72
  5. Step 5: Solve for x
    x = 571,452,578,800.72/819,888.74
  6. Step 6: Final answer
    x = 696,987.96

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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.