Home / 774,007.70-1,161,011.55-455,143.10

Finding the Fourth Proportional to 774,007.70, 1,161,011.55 and 455,143.10

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Solution

The fourth proportional to 774,007.70, 1,161,011.55 and 455,143.10 is: 682,714.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,007.70 : 1,161,011.55 = 455,143.10 : x
  2. Step 2: Convert to fraction form
    774,007.70/1,161,011.55 = 455,143.10/x
  3. Step 3: Cross multiply
    774,007.70x = 1,161,011.55 × 455,143.10
  4. Step 4: Simplify right side
    774,007.70x = 528,426,396,002.81
  5. Step 5: Solve for x
    x = 528,426,396,002.81/774,007.70
  6. Step 6: Final answer
    x = 682,714.65

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Similar ratio
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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.