Home / 762,746.25-1,144,283.40-257,319.75

Finding the Fourth Proportional to 762,746.25, 1,144,283.40 and 257,319.75

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Solution

The fourth proportional to 762,746.25, 1,144,283.40 and 257,319.75 is: 386,034.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,746.25 : 1,144,283.40 = 257,319.75 : x
  2. Step 2: Convert to fraction form
    762,746.25/1,144,283.40 = 257,319.75/x
  3. Step 3: Cross multiply
    762,746.25x = 1,144,283.40 × 257,319.75
  4. Step 4: Simplify right side
    762,746.25x = 294,446,718,417.15
  5. Step 5: Solve for x
    x = 294,446,718,417.15/762,746.25
  6. Step 6: Final answer
    x = 386,034.96

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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.