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Finding the Fourth Proportional to 571,612, 788,767.70 and 329,972.42

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Solution

The fourth proportional to 571,612, 788,767.70 and 329,972.42 is: 455,329.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,612 : 788,767.70 = 329,972.42 : x
  2. Step 2: Convert to fraction form
    571,612/788,767.70 = 329,972.42/x
  3. Step 3: Cross multiply
    571,612x = 788,767.70 × 329,972.42
  4. Step 4: Simplify right side
    571,612x = 260,271,586,786.83
  5. Step 5: Solve for x
    x = 260,271,586,786.83/571,612
  6. Step 6: Final answer
    x = 455,329.12

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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.