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Finding the Fourth Proportional to 906,679.20, 1,360,018.80 and 545,872.80

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Solution

The fourth proportional to 906,679.20, 1,360,018.80 and 545,872.80 is: 818,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,679.20 : 1,360,018.80 = 545,872.80 : x
  2. Step 2: Convert to fraction form
    906,679.20/1,360,018.80 = 545,872.80/x
  3. Step 3: Cross multiply
    906,679.20x = 1,360,018.80 × 545,872.80
  4. Step 4: Simplify right side
    906,679.20x = 742,397,270,408.64
  5. Step 5: Solve for x
    x = 742,397,270,408.64/906,679.20
  6. Step 6: Final answer
    x = 818,809.20

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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.