Home / 1,059,200.80-1,587,764.40-427,271.20

Finding the Fourth Proportional to 1,059,200.80, 1,587,764.40 and 427,271.20

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Solution

The fourth proportional to 1,059,200.80, 1,587,764.40 and 427,271.20 is: 640,488.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059,200.80 : 1,587,764.40 = 427,271.20 : x
  2. Step 2: Convert to fraction form
    1,059,200.80/1,587,764.40 = 427,271.20/x
  3. Step 3: Cross multiply
    1,059,200.80x = 1,587,764.40 × 427,271.20
  4. Step 4: Simplify right side
    1,059,200.80x = 678,406,000,505.28
  5. Step 5: Solve for x
    x = 678,406,000,505.28/1,059,200.80
  6. Step 6: Final answer
    x = 640,488.57

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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.