Home / 865,477.80-1,298,216.70-225,780.30

Finding the Fourth Proportional to 865,477.80, 1,298,216.70 and 225,780.30

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Solution

The fourth proportional to 865,477.80, 1,298,216.70 and 225,780.30 is: 338,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,477.80 : 1,298,216.70 = 225,780.30 : x
  2. Step 2: Convert to fraction form
    865,477.80/1,298,216.70 = 225,780.30/x
  3. Step 3: Cross multiply
    865,477.80x = 1,298,216.70 × 225,780.30
  4. Step 4: Simplify right side
    865,477.80x = 293,111,755,991.01
  5. Step 5: Solve for x
    x = 293,111,755,991.01/865,477.80
  6. Step 6: Final answer
    x = 338,670.45

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.