Home / 554,159.30-764,724.53-312,439.76

Finding the Fourth Proportional to 554,159.30, 764,724.53 and 312,439.76

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Solution

The fourth proportional to 554,159.30, 764,724.53 and 312,439.76 is: 431,158.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,159.30 : 764,724.53 = 312,439.76 : x
  2. Step 2: Convert to fraction form
    554,159.30/764,724.53 = 312,439.76/x
  3. Step 3: Cross multiply
    554,159.30x = 764,724.53 × 312,439.76
  4. Step 4: Simplify right side
    554,159.30x = 238,930,343,233.49
  5. Step 5: Solve for x
    x = 238,930,343,233.49/554,159.30
  6. Step 6: Final answer
    x = 431,158.23

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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.