Home / 786,072.20-1,083,681.24-664,726.64

Finding the Fourth Proportional to 786,072.20, 1,083,681.24 and 664,726.64

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Solution

The fourth proportional to 786,072.20, 1,083,681.24 and 664,726.64 is: 916,393.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,072.20 : 1,083,681.24 = 664,726.64 : x
  2. Step 2: Convert to fraction form
    786,072.20/1,083,681.24 = 664,726.64/x
  3. Step 3: Cross multiply
    786,072.20x = 1,083,681.24 × 664,726.64
  4. Step 4: Simplify right side
    786,072.20x = 720,351,789,496.23
  5. Step 5: Solve for x
    x = 720,351,789,496.23/786,072.20
  6. Step 6: Final answer
    x = 916,393.93

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Double scale
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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.