Home / 1,121,854.40-1,682,263.20-490,443.20

Finding the Fourth Proportional to 1,121,854.40, 1,682,263.20 and 490,443.20

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Solution

The fourth proportional to 1,121,854.40, 1,682,263.20 and 490,443.20 is: 735,438.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,854.40 : 1,682,263.20 = 490,443.20 : x
  2. Step 2: Convert to fraction form
    1,121,854.40/1,682,263.20 = 490,443.20/x
  3. Step 3: Cross multiply
    1,121,854.40x = 1,682,263.20 × 490,443.20
  4. Step 4: Simplify right side
    1,121,854.40x = 825,054,547,050.24
  5. Step 5: Solve for x
    x = 825,054,547,050.24/1,121,854.40
  6. Step 6: Final answer
    x = 735,438.17

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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.