Home / 1,030,357.72-1,420,251.34-812,210.92

Finding the Fourth Proportional to 1,030,357.72, 1,420,251.34 and 812,210.92

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Solution

The fourth proportional to 1,030,357.72, 1,420,251.34 and 812,210.92 is: 1,119,556.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030,357.72 : 1,420,251.34 = 812,210.92 : x
  2. Step 2: Convert to fraction form
    1,030,357.72/1,420,251.34 = 812,210.92/x
  3. Step 3: Cross multiply
    1,030,357.72x = 1,420,251.34 × 812,210.92
  4. Step 4: Simplify right side
    1,030,357.72x = 1,153,543,647,492.63
  5. Step 5: Solve for x
    x = 1,153,543,647,492.63/1,030,357.72
  6. Step 6: Final answer
    x = 1,119,556.47

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Double scale
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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.