Home / 745,134.40-1,117,712.10-212,655.52

Finding the Fourth Proportional to 745,134.40, 1,117,712.10 and 212,655.52

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Solution

The fourth proportional to 745,134.40, 1,117,712.10 and 212,655.52 is: 318,986.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,134.40 : 1,117,712.10 = 212,655.52 : x
  2. Step 2: Convert to fraction form
    745,134.40/1,117,712.10 = 212,655.52/x
  3. Step 3: Cross multiply
    745,134.40x = 1,117,712.10 × 212,655.52
  4. Step 4: Simplify right side
    745,134.40x = 237,687,647,835.79
  5. Step 5: Solve for x
    x = 237,687,647,835.79/745,134.40
  6. Step 6: Final answer
    x = 318,986.28

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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.