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Finding the Fourth Proportional to 403,363.40, 605,045.10 and 384,009.80

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Solution

The fourth proportional to 403,363.40, 605,045.10 and 384,009.80 is: 576,014.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,363.40 : 605,045.10 = 384,009.80 : x
  2. Step 2: Convert to fraction form
    403,363.40/605,045.10 = 384,009.80/x
  3. Step 3: Cross multiply
    403,363.40x = 605,045.10 × 384,009.80
  4. Step 4: Simplify right side
    403,363.40x = 232,343,247,841.98
  5. Step 5: Solve for x
    x = 232,343,247,841.98/403,363.40
  6. Step 6: Final answer
    x = 576,014.70

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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.