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Finding the Fourth Proportional to 513,300.78, 708,021.36 and 329,248.08

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Solution

The fourth proportional to 513,300.78, 708,021.36 and 329,248.08 is: 454,148.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,300.78 : 708,021.36 = 329,248.08 : x
  2. Step 2: Convert to fraction form
    513,300.78/708,021.36 = 329,248.08/x
  3. Step 3: Cross multiply
    513,300.78x = 708,021.36 × 329,248.08
  4. Step 4: Simplify right side
    513,300.78x = 233,114,673,378.99
  5. Step 5: Solve for x
    x = 233,114,673,378.99/513,300.78
  6. Step 6: Final answer
    x = 454,148.29

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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.