Home / 720,748.40-1,081,122.60-346,809.20

Finding the Fourth Proportional to 720,748.40, 1,081,122.60 and 346,809.20

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Solution

The fourth proportional to 720,748.40, 1,081,122.60 and 346,809.20 is: 520,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,748.40 : 1,081,122.60 = 346,809.20 : x
  2. Step 2: Convert to fraction form
    720,748.40/1,081,122.60 = 346,809.20/x
  3. Step 3: Cross multiply
    720,748.40x = 1,081,122.60 × 346,809.20
  4. Step 4: Simplify right side
    720,748.40x = 374,943,264,007.92
  5. Step 5: Solve for x
    x = 374,943,264,007.92/720,748.40
  6. Step 6: Final answer
    x = 520,213.80

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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.