Home / 739,077.90-1,108,908.45-289,722.30

Finding the Fourth Proportional to 739,077.90, 1,108,908.45 and 289,722.30

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Solution

The fourth proportional to 739,077.90, 1,108,908.45 and 289,722.30 is: 434,697.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,077.90 : 1,108,908.45 = 289,722.30 : x
  2. Step 2: Convert to fraction form
    739,077.90/1,108,908.45 = 289,722.30/x
  3. Step 3: Cross multiply
    739,077.90x = 1,108,908.45 × 289,722.30
  4. Step 4: Simplify right side
    739,077.90x = 321,275,506,623.44
  5. Step 5: Solve for x
    x = 321,275,506,623.44/739,077.90
  6. Step 6: Final answer
    x = 434,697.76

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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.