Home / 812,709.19-1,218,119.62-306,948.35

Finding the Fourth Proportional to 812,709.19, 1,218,119.62 and 306,948.35

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Solution

The fourth proportional to 812,709.19, 1,218,119.62 and 306,948.35 is: 460,065.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,709.19 : 1,218,119.62 = 306,948.35 : x
  2. Step 2: Convert to fraction form
    812,709.19/1,218,119.62 = 306,948.35/x
  3. Step 3: Cross multiply
    812,709.19x = 1,218,119.62 × 306,948.35
  4. Step 4: Simplify right side
    812,709.19x = 373,899,812,129.19
  5. Step 5: Solve for x
    x = 373,899,812,129.19/812,709.19
  6. Step 6: Final answer
    x = 460,065.93

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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.