Home / 740,910.18-1,022,455.86-401,378.40

Finding the Fourth Proportional to 740,910.18, 1,022,455.86 and 401,378.40

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Solution

The fourth proportional to 740,910.18, 1,022,455.86 and 401,378.40 is: 553,902.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,910.18 : 1,022,455.86 = 401,378.40 : x
  2. Step 2: Convert to fraction form
    740,910.18/1,022,455.86 = 401,378.40/x
  3. Step 3: Cross multiply
    740,910.18x = 1,022,455.86 × 401,378.40
  4. Step 4: Simplify right side
    740,910.18x = 410,391,697,157.42
  5. Step 5: Solve for x
    x = 410,391,697,157.42/740,910.18
  6. Step 6: Final answer
    x = 553,902.09

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.