Home / 870,081.68-1,200,720.91-488,116.66

Finding the Fourth Proportional to 870,081.68, 1,200,720.91 and 488,116.66

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Solution

The fourth proportional to 870,081.68, 1,200,720.91 and 488,116.66 is: 673,605.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,081.68 : 1,200,720.91 = 488,116.66 : x
  2. Step 2: Convert to fraction form
    870,081.68/1,200,720.91 = 488,116.66/x
  3. Step 3: Cross multiply
    870,081.68x = 1,200,720.91 × 488,116.66
  4. Step 4: Simplify right side
    870,081.68x = 586,091,880,181.36
  5. Step 5: Solve for x
    x = 586,091,880,181.36/870,081.68
  6. Step 6: Final answer
    x = 673,605.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.