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Finding the Fourth Proportional to 554,234.42, 764,778.51 and 312,502.59

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Solution

The fourth proportional to 554,234.42, 764,778.51 and 312,502.59 is: 431,216.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,234.42 : 764,778.51 = 312,502.59 : x
  2. Step 2: Convert to fraction form
    554,234.42/764,778.51 = 312,502.59/x
  3. Step 3: Cross multiply
    554,234.42x = 764,778.51 × 312,502.59
  4. Step 4: Simplify right side
    554,234.42x = 238,995,265,151.34
  5. Step 5: Solve for x
    x = 238,995,265,151.34/554,234.42
  6. Step 6: Final answer
    x = 431,216.93

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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.