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Finding the Fourth Proportional to 659,663.87, 910,259.28 and 369,291.29

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Solution

The fourth proportional to 659,663.87, 910,259.28 and 369,291.29 is: 509,578.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,663.87 : 910,259.28 = 369,291.29 : x
  2. Step 2: Convert to fraction form
    659,663.87/910,259.28 = 369,291.29/x
  3. Step 3: Cross multiply
    659,663.87x = 910,259.28 × 369,291.29
  4. Step 4: Simplify right side
    659,663.87x = 336,150,819,194.38
  5. Step 5: Solve for x
    x = 336,150,819,194.38/659,663.87
  6. Step 6: Final answer
    x = 509,578.95

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Double scale
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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.