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Finding the Fourth Proportional to 608,445.38, 912,686.70 and 209,080.46

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Solution

The fourth proportional to 608,445.38, 912,686.70 and 209,080.46 is: 313,627.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,445.38 : 912,686.70 = 209,080.46 : x
  2. Step 2: Convert to fraction form
    608,445.38/912,686.70 = 209,080.46/x
  3. Step 3: Cross multiply
    608,445.38x = 912,686.70 × 209,080.46
  4. Step 4: Simplify right side
    608,445.38x = 190,824,955,071.88
  5. Step 5: Solve for x
    x = 190,824,955,071.88/608,445.38
  6. Step 6: Final answer
    x = 313,627.09

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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.