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Finding the Fourth Proportional to 707,463.76, 976,388.22 and 401,639.15

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Solution

The fourth proportional to 707,463.76, 976,388.22 and 401,639.15 is: 554,312.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,463.76 : 976,388.22 = 401,639.15 : x
  2. Step 2: Convert to fraction form
    707,463.76/976,388.22 = 401,639.15/x
  3. Step 3: Cross multiply
    707,463.76x = 976,388.22 × 401,639.15
  4. Step 4: Simplify right side
    707,463.76x = 392,155,736,222.84
  5. Step 5: Solve for x
    x = 392,155,736,222.84/707,463.76
  6. Step 6: Final answer
    x = 554,312.12

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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.