Home / 1,210,854.80-1,820,218.80-858,310.40

Finding the Fourth Proportional to 1,210,854.80, 1,820,218.80 and 858,310.40

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Solution

The fourth proportional to 1,210,854.80, 1,820,218.80 and 858,310.40 is: 1,290,256.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,854.80 : 1,820,218.80 = 858,310.40 : x
  2. Step 2: Convert to fraction form
    1,210,854.80/1,820,218.80 = 858,310.40/x
  3. Step 3: Cross multiply
    1,210,854.80x = 1,820,218.80 × 858,310.40
  4. Step 4: Simplify right side
    1,210,854.80x = 1,562,312,726,315.52
  5. Step 5: Solve for x
    x = 1,562,312,726,315.52/1,210,854.80
  6. Step 6: Final answer
    x = 1,290,256.05

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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.