Home / 513,750.40-709,260.59-309,852.75

Finding the Fourth Proportional to 513,750.40, 709,260.59 and 309,852.75

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Solution

The fourth proportional to 513,750.40, 709,260.59 and 309,852.75 is: 427,768.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,750.40 : 709,260.59 = 309,852.75 : x
  2. Step 2: Convert to fraction form
    513,750.40/709,260.59 = 309,852.75/x
  3. Step 3: Cross multiply
    513,750.40x = 709,260.59 × 309,852.75
  4. Step 4: Simplify right side
    513,750.40x = 219,766,344,278.12
  5. Step 5: Solve for x
    x = 219,766,344,278.12/513,750.40
  6. Step 6: Final answer
    x = 427,768.71

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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.