Home / 1,118,785.20-1,678,177.80-803,857.20

Finding the Fourth Proportional to 1,118,785.20, 1,678,177.80 and 803,857.20

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Solution

The fourth proportional to 1,118,785.20, 1,678,177.80 and 803,857.20 is: 1,205,785.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,785.20 : 1,678,177.80 = 803,857.20 : x
  2. Step 2: Convert to fraction form
    1,118,785.20/1,678,177.80 = 803,857.20/x
  3. Step 3: Cross multiply
    1,118,785.20x = 1,678,177.80 × 803,857.20
  4. Step 4: Simplify right side
    1,118,785.20x = 1,349,015,307,410.16
  5. Step 5: Solve for x
    x = 1,349,015,307,410.16/1,118,785.20
  6. Step 6: Final answer
    x = 1,205,785.80

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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.