Home / 740,718.80-1,111,078.20-291,290.30

Finding the Fourth Proportional to 740,718.80, 1,111,078.20 and 291,290.30

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Solution

The fourth proportional to 740,718.80, 1,111,078.20 and 291,290.30 is: 436,935.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,718.80 : 1,111,078.20 = 291,290.30 : x
  2. Step 2: Convert to fraction form
    740,718.80/1,111,078.20 = 291,290.30/x
  3. Step 3: Cross multiply
    740,718.80x = 1,111,078.20 × 291,290.30
  4. Step 4: Simplify right side
    740,718.80x = 323,646,302,201.46
  5. Step 5: Solve for x
    x = 323,646,302,201.46/740,718.80
  6. Step 6: Final answer
    x = 436,935.45

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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.