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Finding the Fourth Proportional to 564,779.08, 779,396.07 and 310,146.40

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Solution

The fourth proportional to 564,779.08, 779,396.07 and 310,146.40 is: 428,002.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,779.08 : 779,396.07 = 310,146.40 : x
  2. Step 2: Convert to fraction form
    564,779.08/779,396.07 = 310,146.40/x
  3. Step 3: Cross multiply
    564,779.08x = 779,396.07 × 310,146.40
  4. Step 4: Simplify right side
    564,779.08x = 241,726,885,284.65
  5. Step 5: Solve for x
    x = 241,726,885,284.65/564,779.08
  6. Step 6: Final answer
    x = 428,002.55

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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.