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Finding the Fourth Proportional to 707,478.93, 976,425.66 and 417,143.73

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Solution

The fourth proportional to 707,478.93, 976,425.66 and 417,143.73 is: 575,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,478.93 : 976,425.66 = 417,143.73 : x
  2. Step 2: Convert to fraction form
    707,478.93/976,425.66 = 417,143.73/x
  3. Step 3: Cross multiply
    707,478.93x = 976,425.66 × 417,143.73
  4. Step 4: Simplify right side
    707,478.93x = 407,309,841,880.11
  5. Step 5: Solve for x
    x = 407,309,841,880.11/707,478.93
  6. Step 6: Final answer
    x = 575,720.10

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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.