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Finding the Fourth Proportional to 647,802.50, 894,254.10 and 418,471.60

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Solution

The fourth proportional to 647,802.50, 894,254.10 and 418,471.60 is: 577,675.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,802.50 : 894,254.10 = 418,471.60 : x
  2. Step 2: Convert to fraction form
    647,802.50/894,254.10 = 418,471.60/x
  3. Step 3: Cross multiply
    647,802.50x = 894,254.10 × 418,471.60
  4. Step 4: Simplify right side
    647,802.50x = 374,219,944,033.56
  5. Step 5: Solve for x
    x = 374,219,944,033.56/647,802.50
  6. Step 6: Final answer
    x = 577,675.98

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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.