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Finding the Fourth Proportional to 578,779.60, 867,877.80 and 342,194.80

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Solution

The fourth proportional to 578,779.60, 867,877.80 and 342,194.80 is: 513,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,779.60 : 867,877.80 = 342,194.80 : x
  2. Step 2: Convert to fraction form
    578,779.60/867,877.80 = 342,194.80/x
  3. Step 3: Cross multiply
    578,779.60x = 867,877.80 × 342,194.80
  4. Step 4: Simplify right side
    578,779.60x = 296,983,270,195.44
  5. Step 5: Solve for x
    x = 296,983,270,195.44/578,779.60
  6. Step 6: Final answer
    x = 513,119.80

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1.5x scale

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.