Home / 745,917.24-1,118,759.76-409,123.56

Finding the Fourth Proportional to 745,917.24, 1,118,759.76 and 409,123.56

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Solution

The fourth proportional to 745,917.24, 1,118,759.76 and 409,123.56 is: 613,621.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,917.24 : 1,118,759.76 = 409,123.56 : x
  2. Step 2: Convert to fraction form
    745,917.24/1,118,759.76 = 409,123.56/x
  3. Step 3: Cross multiply
    745,917.24x = 1,118,759.76 × 409,123.56
  4. Step 4: Simplify right side
    745,917.24x = 457,710,975,795.95
  5. Step 5: Solve for x
    x = 457,710,975,795.95/745,917.24
  6. Step 6: Final answer
    x = 613,621.66

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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.