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Finding the Fourth Proportional to 618,106.76, 852,841.12 and 349,834.76

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Solution

The fourth proportional to 618,106.76, 852,841.12 and 349,834.76 is: 482,689.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,106.76 : 852,841.12 = 349,834.76 : x
  2. Step 2: Convert to fraction form
    618,106.76/852,841.12 = 349,834.76/x
  3. Step 3: Cross multiply
    618,106.76x = 852,841.12 × 349,834.76
  4. Step 4: Simplify right side
    618,106.76x = 298,353,468,533.33
  5. Step 5: Solve for x
    x = 298,353,468,533.33/618,106.76
  6. Step 6: Final answer
    x = 482,689.22

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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.