Home / 766,706.77-1,148,586.17-428,722.32

Finding the Fourth Proportional to 766,706.77, 1,148,586.17 and 428,722.32

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Solution

The fourth proportional to 766,706.77, 1,148,586.17 and 428,722.32 is: 642,259.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,706.77 : 1,148,586.17 = 428,722.32 : x
  2. Step 2: Convert to fraction form
    766,706.77/1,148,586.17 = 428,722.32/x
  3. Step 3: Cross multiply
    766,706.77x = 1,148,586.17 × 428,722.32
  4. Step 4: Simplify right side
    766,706.77x = 492,424,519,635.77
  5. Step 5: Solve for x
    x = 492,424,519,635.77/766,706.77
  6. Step 6: Final answer
    x = 642,259.26

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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.