Home / 771,422.39-1,157,209.67-265,916.82

Finding the Fourth Proportional to 771,422.39, 1,157,209.67 and 265,916.82

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Solution

The fourth proportional to 771,422.39, 1,157,209.67 and 265,916.82 is: 398,901.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,422.39 : 1,157,209.67 = 265,916.82 : x
  2. Step 2: Convert to fraction form
    771,422.39/1,157,209.67 = 265,916.82/x
  3. Step 3: Cross multiply
    771,422.39x = 1,157,209.67 × 265,916.82
  4. Step 4: Simplify right side
    771,422.39x = 307,721,513,481.46
  5. Step 5: Solve for x
    x = 307,721,513,481.46/771,422.39
  6. Step 6: Final answer
    x = 398,901.45

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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.