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Finding the Fourth Proportional to 611,395.74, 917,092.71 and 400,984.38

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Solution

The fourth proportional to 611,395.74, 917,092.71 and 400,984.38 is: 601,475.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,395.74 : 917,092.71 = 400,984.38 : x
  2. Step 2: Convert to fraction form
    611,395.74/917,092.71 = 400,984.38/x
  3. Step 3: Cross multiply
    611,395.74x = 917,092.71 × 400,984.38
  4. Step 4: Simplify right side
    611,395.74x = 367,739,851,721.87
  5. Step 5: Solve for x
    x = 367,739,851,721.87/611,395.74
  6. Step 6: Final answer
    x = 601,475.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.