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Finding the Fourth Proportional to 978,779.13, 1,468,703.84 and 379,763.93

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Solution

The fourth proportional to 978,779.13, 1,468,703.84 and 379,763.93 is: 569,853.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,779.13 : 1,468,703.84 = 379,763.93 : x
  2. Step 2: Convert to fraction form
    978,779.13/1,468,703.84 = 379,763.93/x
  3. Step 3: Cross multiply
    978,779.13x = 1,468,703.84 × 379,763.93
  4. Step 4: Simplify right side
    978,779.13x = 557,760,739,261.85
  5. Step 5: Solve for x
    x = 557,760,739,261.85/978,779.13
  6. Step 6: Final answer
    x = 569,853.53

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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.