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Finding the Fourth Proportional to 564,381.12, 778,860.72 and 322,703.04

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Solution

The fourth proportional to 564,381.12, 778,860.72 and 322,703.04 is: 445,338.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,381.12 : 778,860.72 = 322,703.04 : x
  2. Step 2: Convert to fraction form
    564,381.12/778,860.72 = 322,703.04/x
  3. Step 3: Cross multiply
    564,381.12x = 778,860.72 × 322,703.04
  4. Step 4: Simplify right side
    564,381.12x = 251,340,722,080.59
  5. Step 5: Solve for x
    x = 251,340,722,080.59/564,381.12
  6. Step 6: Final answer
    x = 445,338.64

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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.