Home / 740,279.60-1,021,589.04-400,747.84

Finding the Fourth Proportional to 740,279.60, 1,021,589.04 and 400,747.84

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Solution

The fourth proportional to 740,279.60, 1,021,589.04 and 400,747.84 is: 553,033.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,279.60 : 1,021,589.04 = 400,747.84 : x
  2. Step 2: Convert to fraction form
    740,279.60/1,021,589.04 = 400,747.84/x
  3. Step 3: Cross multiply
    740,279.60x = 1,021,589.04 × 400,747.84
  4. Step 4: Simplify right side
    740,279.60x = 409,399,601,147.67
  5. Step 5: Solve for x
    x = 409,399,601,147.67/740,279.60
  6. Step 6: Final answer
    x = 553,033.75

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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.