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Finding the Fourth Proportional to 487,726.38, 730,642.68 and 359,409.56

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Solution

The fourth proportional to 487,726.38, 730,642.68 and 359,409.56 is: 538,416.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,726.38 : 730,642.68 = 359,409.56 : x
  2. Step 2: Convert to fraction form
    487,726.38/730,642.68 = 359,409.56/x
  3. Step 3: Cross multiply
    487,726.38x = 730,642.68 × 359,409.56
  4. Step 4: Simplify right side
    487,726.38x = 262,599,960,482.81
  5. Step 5: Solve for x
    x = 262,599,960,482.81/487,726.38
  6. Step 6: Final answer
    x = 538,416.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.