Home / 747,353.79-1,120,091.31-320,384.52

Finding the Fourth Proportional to 747,353.79, 1,120,091.31 and 320,384.52

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Solution

The fourth proportional to 747,353.79, 1,120,091.31 and 320,384.52 is: 480,174.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,353.79 : 1,120,091.31 = 320,384.52 : x
  2. Step 2: Convert to fraction form
    747,353.79/1,120,091.31 = 320,384.52/x
  3. Step 3: Cross multiply
    747,353.79x = 1,120,091.31 × 320,384.52
  4. Step 4: Simplify right side
    747,353.79x = 358,859,916,710.52
  5. Step 5: Solve for x
    x = 358,859,916,710.52/747,353.79
  6. Step 6: Final answer
    x = 480,174.08

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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.