Home / 688,445.81-1,032,668.54-215,131.19

Finding the Fourth Proportional to 688,445.81, 1,032,668.54 and 215,131.19

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Solution

The fourth proportional to 688,445.81, 1,032,668.54 and 215,131.19 is: 322,696.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,445.81 : 1,032,668.54 = 215,131.19 : x
  2. Step 2: Convert to fraction form
    688,445.81/1,032,668.54 = 215,131.19/x
  3. Step 3: Cross multiply
    688,445.81x = 1,032,668.54 × 215,131.19
  4. Step 4: Simplify right side
    688,445.81x = 222,159,205,646.76
  5. Step 5: Solve for x
    x = 222,159,205,646.76/688,445.81
  6. Step 6: Final answer
    x = 322,696.72

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Similar ratio
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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.