Home / 828,899.12-1,143,882.48-489,389.20

Finding the Fourth Proportional to 828,899.12, 1,143,882.48 and 489,389.20

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Solution

The fourth proportional to 828,899.12, 1,143,882.48 and 489,389.20 is: 675,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,899.12 : 1,143,882.48 = 489,389.20 : x
  2. Step 2: Convert to fraction form
    828,899.12/1,143,882.48 = 489,389.20/x
  3. Step 3: Cross multiply
    828,899.12x = 1,143,882.48 × 489,389.20
  4. Step 4: Simplify right side
    828,899.12x = 559,803,731,781.22
  5. Step 5: Solve for x
    x = 559,803,731,781.22/828,899.12
  6. Step 6: Final answer
    x = 675,358.10

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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.