Home / 931,142.70-1,396,714.05-553,229.10

Finding the Fourth Proportional to 931,142.70, 1,396,714.05 and 553,229.10

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Solution

The fourth proportional to 931,142.70, 1,396,714.05 and 553,229.10 is: 829,843.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,142.70 : 1,396,714.05 = 553,229.10 : x
  2. Step 2: Convert to fraction form
    931,142.70/1,396,714.05 = 553,229.10/x
  3. Step 3: Cross multiply
    931,142.70x = 1,396,714.05 × 553,229.10
  4. Step 4: Simplify right side
    931,142.70x = 772,702,856,838.86
  5. Step 5: Solve for x
    x = 772,702,856,838.86/931,142.70
  6. Step 6: Final answer
    x = 829,843.65

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Double scale
Find fourth proportional to 931,143.70, 1,396,715.55 and 553,230.10
Similar ratio
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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.