Home / 799,987.09-1,199,981.78-326,672.45

Finding the Fourth Proportional to 799,987.09, 1,199,981.78 and 326,672.45

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Solution

The fourth proportional to 799,987.09, 1,199,981.78 and 326,672.45 is: 490,009.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    799,987.09 : 1,199,981.78 = 326,672.45 : x
  2. Step 2: Convert to fraction form
    799,987.09/1,199,981.78 = 326,672.45/x
  3. Step 3: Cross multiply
    799,987.09x = 1,199,981.78 × 326,672.45
  4. Step 4: Simplify right side
    799,987.09x = 392,000,984,774.43
  5. Step 5: Solve for x
    x = 392,000,984,774.43/799,987.09
  6. Step 6: Final answer
    x = 490,009.14

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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.