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Finding the Fourth Proportional to 672,908.80, 1,008,441.60 and 548,492.80

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Solution

The fourth proportional to 672,908.80, 1,008,441.60 and 548,492.80 is: 821,988.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,908.80 : 1,008,441.60 = 548,492.80 : x
  2. Step 2: Convert to fraction form
    672,908.80/1,008,441.60 = 548,492.80/x
  3. Step 3: Cross multiply
    672,908.80x = 1,008,441.60 × 548,492.80
  4. Step 4: Simplify right side
    672,908.80x = 553,122,956,820.48
  5. Step 5: Solve for x
    x = 553,122,956,820.48/672,908.80
  6. Step 6: Final answer
    x = 821,988.00

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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.