Home / 764,613.49-1,055,233.85-420,510.06

Finding the Fourth Proportional to 764,613.49, 1,055,233.85 and 420,510.06

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Solution

The fourth proportional to 764,613.49, 1,055,233.85 and 420,510.06 is: 580,340.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,613.49 : 1,055,233.85 = 420,510.06 : x
  2. Step 2: Convert to fraction form
    764,613.49/1,055,233.85 = 420,510.06/x
  3. Step 3: Cross multiply
    764,613.49x = 1,055,233.85 × 420,510.06
  4. Step 4: Simplify right side
    764,613.49x = 443,736,448,526.26
  5. Step 5: Solve for x
    x = 443,736,448,526.26/764,613.49
  6. Step 6: Final answer
    x = 580,340.86

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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.