Home / 828,886.08-1,143,864.54-489,376.20

Finding the Fourth Proportional to 828,886.08, 1,143,864.54 and 489,376.20

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Solution

The fourth proportional to 828,886.08, 1,143,864.54 and 489,376.20 is: 675,340.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,886.08 : 1,143,864.54 = 489,376.20 : x
  2. Step 2: Convert to fraction form
    828,886.08/1,143,864.54 = 489,376.20/x
  3. Step 3: Cross multiply
    828,886.08x = 1,143,864.54 × 489,376.20
  4. Step 4: Simplify right side
    828,886.08x = 559,780,081,899.95
  5. Step 5: Solve for x
    x = 559,780,081,899.95/828,886.08
  6. Step 6: Final answer
    x = 675,340.19

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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.