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Finding the Fourth Proportional to 672,940.55, 928,428.27 and 382,522.75

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Solution

The fourth proportional to 672,940.55, 928,428.27 and 382,522.75 is: 527,750.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,940.55 : 928,428.27 = 382,522.75 : x
  2. Step 2: Convert to fraction form
    672,940.55/928,428.27 = 382,522.75/x
  3. Step 3: Cross multiply
    672,940.55x = 928,428.27 × 382,522.75
  4. Step 4: Simplify right side
    672,940.55x = 355,144,935,018.14
  5. Step 5: Solve for x
    x = 355,144,935,018.14/672,940.55
  6. Step 6: Final answer
    x = 527,750.83

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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.