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Finding the Fourth Proportional to 674,386.74, 930,642.84 and 368,456.55

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Solution

The fourth proportional to 674,386.74, 930,642.84 and 368,456.55 is: 508,464.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,386.74 : 930,642.84 = 368,456.55 : x
  2. Step 2: Convert to fraction form
    674,386.74/930,642.84 = 368,456.55/x
  3. Step 3: Cross multiply
    674,386.74x = 930,642.84 × 368,456.55
  4. Step 4: Simplify right side
    674,386.74x = 342,901,454,289.37
  5. Step 5: Solve for x
    x = 342,901,454,289.37/674,386.74
  6. Step 6: Final answer
    x = 508,464.11

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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.