Home / 778,727.70-1,074,874.05-456,507.54

Finding the Fourth Proportional to 778,727.70, 1,074,874.05 and 456,507.54

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Solution

The fourth proportional to 778,727.70, 1,074,874.05 and 456,507.54 is: 630,115.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,727.70 : 1,074,874.05 = 456,507.54 : x
  2. Step 2: Convert to fraction form
    778,727.70/1,074,874.05 = 456,507.54/x
  3. Step 3: Cross multiply
    778,727.70x = 1,074,874.05 × 456,507.54
  4. Step 4: Simplify right side
    778,727.70x = 490,688,108,375.34
  5. Step 5: Solve for x
    x = 490,688,108,375.34/778,727.70
  6. Step 6: Final answer
    x = 630,115.13

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1.5x scale

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.