Home / 930,939.20-1,396,408.80-458,547.20

Finding the Fourth Proportional to 930,939.20, 1,396,408.80 and 458,547.20

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Solution

The fourth proportional to 930,939.20, 1,396,408.80 and 458,547.20 is: 687,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,939.20 : 1,396,408.80 = 458,547.20 : x
  2. Step 2: Convert to fraction form
    930,939.20/1,396,408.80 = 458,547.20/x
  3. Step 3: Cross multiply
    930,939.20x = 1,396,408.80 × 458,547.20
  4. Step 4: Simplify right side
    930,939.20x = 640,319,345,295.36
  5. Step 5: Solve for x
    x = 640,319,345,295.36/930,939.20
  6. Step 6: Final answer
    x = 687,820.80

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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.