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Finding the Fourth Proportional to 652,139.28, 900,004.36 and 361,779.48

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Solution

The fourth proportional to 652,139.28, 900,004.36 and 361,779.48 is: 499,284.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,139.28 : 900,004.36 = 361,779.48 : x
  2. Step 2: Convert to fraction form
    652,139.28/900,004.36 = 361,779.48/x
  3. Step 3: Cross multiply
    652,139.28x = 900,004.36 × 361,779.48
  4. Step 4: Simplify right side
    652,139.28x = 325,603,109,358.53
  5. Step 5: Solve for x
    x = 325,603,109,358.53/652,139.28
  6. Step 6: Final answer
    x = 499,284.62

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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.