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Finding the Fourth Proportional to 806,818.40, 1,208,384.40 and 475,042.40

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Solution

The fourth proportional to 806,818.40, 1,208,384.40 and 475,042.40 is: 711,478.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,818.40 : 1,208,384.40 = 475,042.40 : x
  2. Step 2: Convert to fraction form
    806,818.40/1,208,384.40 = 475,042.40/x
  3. Step 3: Cross multiply
    806,818.40x = 1,208,384.40 × 475,042.40
  4. Step 4: Simplify right side
    806,818.40x = 574,033,825,498.56
  5. Step 5: Solve for x
    x = 574,033,825,498.56/806,818.40
  6. Step 6: Final answer
    x = 711,478.35

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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.