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Finding the Fourth Proportional to 501,275.30, 691,696.17 and 286,429.28

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Solution

The fourth proportional to 501,275.30, 691,696.17 and 286,429.28 is: 395,235.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,275.30 : 691,696.17 = 286,429.28 : x
  2. Step 2: Convert to fraction form
    501,275.30/691,696.17 = 286,429.28/x
  3. Step 3: Cross multiply
    501,275.30x = 691,696.17 × 286,429.28
  4. Step 4: Simplify right side
    501,275.30x = 198,122,032,493.38
  5. Step 5: Solve for x
    x = 198,122,032,493.38/501,275.30
  6. Step 6: Final answer
    x = 395,235.98

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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.