Home / 806,085.40-1,111,642.68-500,211.40

Finding the Fourth Proportional to 806,085.40, 1,111,642.68 and 500,211.40

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Solution

The fourth proportional to 806,085.40, 1,111,642.68 and 500,211.40 is: 689,823.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,085.40 : 1,111,642.68 = 500,211.40 : x
  2. Step 2: Convert to fraction form
    806,085.40/1,111,642.68 = 500,211.40/x
  3. Step 3: Cross multiply
    806,085.40x = 1,111,642.68 × 500,211.40
  4. Step 4: Simplify right side
    806,085.40x = 556,056,341,262.55
  5. Step 5: Solve for x
    x = 556,056,341,262.55/806,085.40
  6. Step 6: Final answer
    x = 689,823.11

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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.