Home / 810,148.40-1,214,639.40-455,271.20

Finding the Fourth Proportional to 810,148.40, 1,214,639.40 and 455,271.20

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Solution

The fourth proportional to 810,148.40, 1,214,639.40 and 455,271.20 is: 682,579.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,148.40 : 1,214,639.40 = 455,271.20 : x
  2. Step 2: Convert to fraction form
    810,148.40/1,214,639.40 = 455,271.20/x
  3. Step 3: Cross multiply
    810,148.40x = 1,214,639.40 × 455,271.20
  4. Step 4: Simplify right side
    810,148.40x = 552,990,337,205.28
  5. Step 5: Solve for x
    x = 552,990,337,205.28/810,148.40
  6. Step 6: Final answer
    x = 682,579.06

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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.