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Finding the Fourth Proportional to 691,031.94, 953,656.54 and 404,644.28

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Solution

The fourth proportional to 691,031.94, 953,656.54 and 404,644.28 is: 558,428.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,031.94 : 953,656.54 = 404,644.28 : x
  2. Step 2: Convert to fraction form
    691,031.94/953,656.54 = 404,644.28/x
  3. Step 3: Cross multiply
    691,031.94x = 953,656.54 × 404,644.28
  4. Step 4: Simplify right side
    691,031.94x = 385,891,663,995.59
  5. Step 5: Solve for x
    x = 385,891,663,995.59/691,031.94
  6. Step 6: Final answer
    x = 558,428.12

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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.