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Finding the Fourth Proportional to 637,279.65, 879,471 and 350,826.39

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Solution

The fourth proportional to 637,279.65, 879,471 and 350,826.39 is: 484,154.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,279.65 : 879,471 = 350,826.39 : x
  2. Step 2: Convert to fraction form
    637,279.65/879,471 = 350,826.39/x
  3. Step 3: Cross multiply
    637,279.65x = 879,471 × 350,826.39
  4. Step 4: Simplify right side
    637,279.65x = 308,541,636,039.69
  5. Step 5: Solve for x
    x = 308,541,636,039.69/637,279.65
  6. Step 6: Final answer
    x = 484,154.23

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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.