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Finding the Fourth Proportional to 674,385.65, 930,641.34 and 368,455.46

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Solution

The fourth proportional to 674,385.65, 930,641.34 and 368,455.46 is: 508,462.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,385.65 : 930,641.34 = 368,455.46 : x
  2. Step 2: Convert to fraction form
    674,385.65/930,641.34 = 368,455.46/x
  3. Step 3: Cross multiply
    674,385.65x = 930,641.34 × 368,455.46
  4. Step 4: Simplify right side
    674,385.65x = 342,899,881,182.44
  5. Step 5: Solve for x
    x = 342,899,881,182.44/674,385.65
  6. Step 6: Final answer
    x = 508,462.60

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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.