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Finding the Fourth Proportional to 474,205.12, 655,042.08 and 379,389.76

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Solution

The fourth proportional to 474,205.12, 655,042.08 and 379,389.76 is: 524,069.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,205.12 : 655,042.08 = 379,389.76 : x
  2. Step 2: Convert to fraction form
    474,205.12/655,042.08 = 379,389.76/x
  3. Step 3: Cross multiply
    474,205.12x = 655,042.08 × 379,389.76
  4. Step 4: Simplify right side
    474,205.12x = 248,516,257,521.10
  5. Step 5: Solve for x
    x = 248,516,257,521.10/474,205.12
  6. Step 6: Final answer
    x = 524,069.11

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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.