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Finding the Fourth Proportional to 720,715.66, 994,557.15 and 426,556.06

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Solution

The fourth proportional to 720,715.66, 994,557.15 and 426,556.06 is: 588,629.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,715.66 : 994,557.15 = 426,556.06 : x
  2. Step 2: Convert to fraction form
    720,715.66/994,557.15 = 426,556.06/x
  3. Step 3: Cross multiply
    720,715.66x = 994,557.15 × 426,556.06
  4. Step 4: Simplify right side
    720,715.66x = 424,234,376,862.44
  5. Step 5: Solve for x
    x = 424,234,376,862.44/720,715.66
  6. Step 6: Final answer
    x = 588,629.33

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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.