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Finding the Fourth Proportional to 520,061.89, 780,340.24 and 360,383.55

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Solution

The fourth proportional to 520,061.89, 780,340.24 and 360,383.55 is: 540,746.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,061.89 : 780,340.24 = 360,383.55 : x
  2. Step 2: Convert to fraction form
    520,061.89/780,340.24 = 360,383.55/x
  3. Step 3: Cross multiply
    520,061.89x = 780,340.24 × 360,383.55
  4. Step 4: Simplify right side
    520,061.89x = 281,221,789,275.81
  5. Step 5: Solve for x
    x = 281,221,789,275.81/520,061.89
  6. Step 6: Final answer
    x = 540,746.77

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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.