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Finding the Fourth Proportional to 390,603.64, 584,949.97 and 352,738.47

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Solution

The fourth proportional to 390,603.64, 584,949.97 and 352,738.47 is: 528,244.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,603.64 : 584,949.97 = 352,738.47 : x
  2. Step 2: Convert to fraction form
    390,603.64/584,949.97 = 352,738.47/x
  3. Step 3: Cross multiply
    390,603.64x = 584,949.97 × 352,738.47
  4. Step 4: Simplify right side
    390,603.64x = 206,334,357,444.35
  5. Step 5: Solve for x
    x = 206,334,357,444.35/390,603.64
  6. Step 6: Final answer
    x = 528,244.84

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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.