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Finding the Fourth Proportional to 556,886.20, 835,329.30 and 379,739.20

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Solution

The fourth proportional to 556,886.20, 835,329.30 and 379,739.20 is: 569,608.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,886.20 : 835,329.30 = 379,739.20 : x
  2. Step 2: Convert to fraction form
    556,886.20/835,329.30 = 379,739.20/x
  3. Step 3: Cross multiply
    556,886.20x = 835,329.30 × 379,739.20
  4. Step 4: Simplify right side
    556,886.20x = 317,207,280,118.56
  5. Step 5: Solve for x
    x = 317,207,280,118.56/556,886.20
  6. Step 6: Final answer
    x = 569,608.80

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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.