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Finding the Fourth Proportional to 691,026.93, 953,649.63 and 404,639.28

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Solution

The fourth proportional to 691,026.93, 953,649.63 and 404,639.28 is: 558,421.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,026.93 : 953,649.63 = 404,639.28 : x
  2. Step 2: Convert to fraction form
    691,026.93/953,649.63 = 404,639.28/x
  3. Step 3: Cross multiply
    691,026.93x = 953,649.63 × 404,639.28
  4. Step 4: Simplify right side
    691,026.93x = 385,884,099,655.47
  5. Step 5: Solve for x
    x = 385,884,099,655.47/691,026.93
  6. Step 6: Final answer
    x = 558,421.22

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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.