Home / 987,335.40-1,480,565.70-455,019.60

Finding the Fourth Proportional to 987,335.40, 1,480,565.70 and 455,019.60

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Solution

The fourth proportional to 987,335.40, 1,480,565.70 and 455,019.60 is: 682,327.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,335.40 : 1,480,565.70 = 455,019.60 : x
  2. Step 2: Convert to fraction form
    987,335.40/1,480,565.70 = 455,019.60/x
  3. Step 3: Cross multiply
    987,335.40x = 1,480,565.70 × 455,019.60
  4. Step 4: Simplify right side
    987,335.40x = 673,686,412,587.72
  5. Step 5: Solve for x
    x = 673,686,412,587.72/987,335.40
  6. Step 6: Final answer
    x = 682,327.82

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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.