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Finding the Fourth Proportional to 403,488.80, 605,816.40 and 304,344.80

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Solution

The fourth proportional to 403,488.80, 605,816.40 and 304,344.80 is: 456,957.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,488.80 : 605,816.40 = 304,344.80 : x
  2. Step 2: Convert to fraction form
    403,488.80/605,816.40 = 304,344.80/x
  3. Step 3: Cross multiply
    403,488.80x = 605,816.40 × 304,344.80
  4. Step 4: Simplify right side
    403,488.80x = 184,377,071,094.72
  5. Step 5: Solve for x
    x = 184,377,071,094.72/403,488.80
  6. Step 6: Final answer
    x = 456,957.10

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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.