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Finding the Fourth Proportional to 704,793.60, 1,055,030.40 and 388,281.60

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Solution

The fourth proportional to 704,793.60, 1,055,030.40 and 388,281.60 is: 581,232.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,793.60 : 1,055,030.40 = 388,281.60 : x
  2. Step 2: Convert to fraction form
    704,793.60/1,055,030.40 = 388,281.60/x
  3. Step 3: Cross multiply
    704,793.60x = 1,055,030.40 × 388,281.60
  4. Step 4: Simplify right side
    704,793.60x = 409,648,891,760.64
  5. Step 5: Solve for x
    x = 409,648,891,760.64/704,793.60
  6. Step 6: Final answer
    x = 581,232.42

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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.