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Finding the Fourth Proportional to 707,247.78, 976,136.47 and 401,352.66

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Solution

The fourth proportional to 707,247.78, 976,136.47 and 401,352.66 is: 553,943.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,247.78 : 976,136.47 = 401,352.66 : x
  2. Step 2: Convert to fraction form
    707,247.78/976,136.47 = 401,352.66/x
  3. Step 3: Cross multiply
    707,247.78x = 976,136.47 × 401,352.66
  4. Step 4: Simplify right side
    707,247.78x = 391,774,966,381.44
  5. Step 5: Solve for x
    x = 391,774,966,381.44/707,247.78
  6. Step 6: Final answer
    x = 553,943.01

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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.