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Finding the Fourth Proportional to 665,395.61, 918,264.96 and 371,052.14

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Solution

The fourth proportional to 665,395.61, 918,264.96 and 371,052.14 is: 512,062.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,395.61 : 918,264.96 = 371,052.14 : x
  2. Step 2: Convert to fraction form
    665,395.61/918,264.96 = 371,052.14/x
  3. Step 3: Cross multiply
    665,395.61x = 918,264.96 × 371,052.14
  4. Step 4: Simplify right side
    665,395.61x = 340,724,173,903.69
  5. Step 5: Solve for x
    x = 340,724,173,903.69/665,395.61
  6. Step 6: Final answer
    x = 512,062.56

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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.