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Finding the Fourth Proportional to 408,047.90, 610,689.45 and 408,047.90

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Solution

The fourth proportional to 408,047.90, 610,689.45 and 408,047.90 is: 610,689.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,047.90 : 610,689.45 = 408,047.90 : x
  2. Step 2: Convert to fraction form
    408,047.90/610,689.45 = 408,047.90/x
  3. Step 3: Cross multiply
    408,047.90x = 610,689.45 × 408,047.90
  4. Step 4: Simplify right side
    408,047.90x = 249,190,547,624.66
  5. Step 5: Solve for x
    x = 249,190,547,624.66/408,047.90
  6. Step 6: Final answer
    x = 610,689.45

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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.