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Finding the Fourth Proportional to 674,386.77, 930,642.88 and 368,456.59

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Solution

The fourth proportional to 674,386.77, 930,642.88 and 368,456.59 is: 508,464.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,386.77 : 930,642.88 = 368,456.59 : x
  2. Step 2: Convert to fraction form
    674,386.77/930,642.88 = 368,456.59/x
  3. Step 3: Cross multiply
    674,386.77x = 930,642.88 × 368,456.59
  4. Step 4: Simplify right side
    674,386.77x = 342,901,498,340.51
  5. Step 5: Solve for x
    x = 342,901,498,340.51/674,386.77
  6. Step 6: Final answer
    x = 508,464.15

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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.