Home / 688,255.44-1,030,721.96-413,912.70

Finding the Fourth Proportional to 688,255.44, 1,030,721.96 and 413,912.70

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Solution

The fourth proportional to 688,255.44, 1,030,721.96 and 413,912.70 is: 619,870.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,255.44 : 1,030,721.96 = 413,912.70 : x
  2. Step 2: Convert to fraction form
    688,255.44/1,030,721.96 = 413,912.70/x
  3. Step 3: Cross multiply
    688,255.44x = 1,030,721.96 × 413,912.70
  4. Step 4: Simplify right side
    688,255.44x = 426,628,909,412.89
  5. Step 5: Solve for x
    x = 426,628,909,412.89/688,255.44
  6. Step 6: Final answer
    x = 619,870.01

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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.