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Finding the Fourth Proportional to 616,178.40, 922,712.40 and 404,671.20

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Solution

The fourth proportional to 616,178.40, 922,712.40 and 404,671.20 is: 605,985.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,178.40 : 922,712.40 = 404,671.20 : x
  2. Step 2: Convert to fraction form
    616,178.40/922,712.40 = 404,671.20/x
  3. Step 3: Cross multiply
    616,178.40x = 922,712.40 × 404,671.20
  4. Step 4: Simplify right side
    616,178.40x = 373,395,134,162.88
  5. Step 5: Solve for x
    x = 373,395,134,162.88/616,178.40
  6. Step 6: Final answer
    x = 605,985.43

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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.