Home / 790,122.88-1,185,307.44-257,520.36

Finding the Fourth Proportional to 790,122.88, 1,185,307.44 and 257,520.36

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Solution

The fourth proportional to 790,122.88, 1,185,307.44 and 257,520.36 is: 386,320.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,122.88 : 1,185,307.44 = 257,520.36 : x
  2. Step 2: Convert to fraction form
    790,122.88/1,185,307.44 = 257,520.36/x
  3. Step 3: Cross multiply
    790,122.88x = 1,185,307.44 × 257,520.36
  4. Step 4: Simplify right side
    790,122.88x = 305,240,798,659.48
  5. Step 5: Solve for x
    x = 305,240,798,659.48/790,122.88
  6. Step 6: Final answer
    x = 386,320.67

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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.