Home / 770,700.28-1,063,549.32-421,838.92

Finding the Fourth Proportional to 770,700.28, 1,063,549.32 and 421,838.92

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Solution

The fourth proportional to 770,700.28, 1,063,549.32 and 421,838.92 is: 582,128.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,700.28 : 1,063,549.32 = 421,838.92 : x
  2. Step 2: Convert to fraction form
    770,700.28/1,063,549.32 = 421,838.92/x
  3. Step 3: Cross multiply
    770,700.28x = 1,063,549.32 × 421,838.92
  4. Step 4: Simplify right side
    770,700.28x = 448,646,496,515.53
  5. Step 5: Solve for x
    x = 448,646,496,515.53/770,700.28
  6. Step 6: Final answer
    x = 582,128.37

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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.