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Finding the Fourth Proportional to 611,326.94, 915,797.48 and 400,325.18

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Solution

The fourth proportional to 611,326.94, 915,797.48 and 400,325.18 is: 599,706.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,326.94 : 915,797.48 = 400,325.18 : x
  2. Step 2: Convert to fraction form
    611,326.94/915,797.48 = 400,325.18/x
  3. Step 3: Cross multiply
    611,326.94x = 915,797.48 × 400,325.18
  4. Step 4: Simplify right side
    611,326.94x = 366,616,791,024.55
  5. Step 5: Solve for x
    x = 366,616,791,024.55/611,326.94
  6. Step 6: Final answer
    x = 599,706.58

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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.