Home / 628,927.20-943,390.80-418,975.20

Finding the Fourth Proportional to 628,927.20, 943,390.80 and 418,975.20

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Solution

The fourth proportional to 628,927.20, 943,390.80 and 418,975.20 is: 628,462.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,927.20 : 943,390.80 = 418,975.20 : x
  2. Step 2: Convert to fraction form
    628,927.20/943,390.80 = 418,975.20/x
  3. Step 3: Cross multiply
    628,927.20x = 943,390.80 × 418,975.20
  4. Step 4: Simplify right side
    628,927.20x = 395,257,349,108.16
  5. Step 5: Solve for x
    x = 395,257,349,108.16/628,927.20
  6. Step 6: Final answer
    x = 628,462.80

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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.