Home / 709,783.55-979,557.19-403,872.80

Finding the Fourth Proportional to 709,783.55, 979,557.19 and 403,872.80

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Solution

The fourth proportional to 709,783.55, 979,557.19 and 403,872.80 is: 557,376.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,783.55 : 979,557.19 = 403,872.80 : x
  2. Step 2: Convert to fraction form
    709,783.55/979,557.19 = 403,872.80/x
  3. Step 3: Cross multiply
    709,783.55x = 979,557.19 × 403,872.80
  4. Step 4: Simplify right side
    709,783.55x = 395,616,506,524.64
  5. Step 5: Solve for x
    x = 395,616,506,524.64/709,783.55
  6. Step 6: Final answer
    x = 557,376.27

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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.