Home / 659,427.20-988,946.40-259,935.20

Finding the Fourth Proportional to 659,427.20, 988,946.40 and 259,935.20

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Solution

The fourth proportional to 659,427.20, 988,946.40 and 259,935.20 is: 389,826.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,427.20 : 988,946.40 = 259,935.20 : x
  2. Step 2: Convert to fraction form
    659,427.20/988,946.40 = 259,935.20/x
  3. Step 3: Cross multiply
    659,427.20x = 988,946.40 × 259,935.20
  4. Step 4: Simplify right side
    659,427.20x = 257,061,980,273.28
  5. Step 5: Solve for x
    x = 257,061,980,273.28/659,427.20
  6. Step 6: Final answer
    x = 389,826.17

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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.