Home / 1,215,114.40-1,820,047.20-653,492.80

Finding the Fourth Proportional to 1,215,114.40, 1,820,047.20 and 653,492.80

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Solution

The fourth proportional to 1,215,114.40, 1,820,047.20 and 653,492.80 is: 978,827.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,114.40 : 1,820,047.20 = 653,492.80 : x
  2. Step 2: Convert to fraction form
    1,215,114.40/1,820,047.20 = 653,492.80/x
  3. Step 3: Cross multiply
    1,215,114.40x = 1,820,047.20 × 653,492.80
  4. Step 4: Simplify right side
    1,215,114.40x = 1,189,387,740,860.16
  5. Step 5: Solve for x
    x = 1,189,387,740,860.16/1,215,114.40
  6. Step 6: Final answer
    x = 978,827.79

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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.