Home / 1,245,854.30-1,870,855.05-685,291.10

Finding the Fourth Proportional to 1,245,854.30, 1,870,855.05 and 685,291.10

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Solution

The fourth proportional to 1,245,854.30, 1,870,855.05 and 685,291.10 is: 1,029,077.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,854.30 : 1,870,855.05 = 685,291.10 : x
  2. Step 2: Convert to fraction form
    1,245,854.30/1,870,855.05 = 685,291.10/x
  3. Step 3: Cross multiply
    1,245,854.30x = 1,870,855.05 × 685,291.10
  4. Step 4: Simplify right side
    1,245,854.30x = 1,282,080,315,155.06
  5. Step 5: Solve for x
    x = 1,282,080,315,155.06/1,245,854.30
  6. Step 6: Final answer
    x = 1,029,077.25

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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.