Home / 812,808.48-1,121,626.32-450,211.20

Finding the Fourth Proportional to 812,808.48, 1,121,626.32 and 450,211.20

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Solution

The fourth proportional to 812,808.48, 1,121,626.32 and 450,211.20 is: 621,264.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,808.48 : 1,121,626.32 = 450,211.20 : x
  2. Step 2: Convert to fraction form
    812,808.48/1,121,626.32 = 450,211.20/x
  3. Step 3: Cross multiply
    812,808.48x = 1,121,626.32 × 450,211.20
  4. Step 4: Simplify right side
    812,808.48x = 504,968,731,478.78
  5. Step 5: Solve for x
    x = 504,968,731,478.78/812,808.48
  6. Step 6: Final answer
    x = 621,264.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.