Home / 637,288.40-955,932.60-438,222.80

Finding the Fourth Proportional to 637,288.40, 955,932.60 and 438,222.80

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Solution

The fourth proportional to 637,288.40, 955,932.60 and 438,222.80 is: 657,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,288.40 : 955,932.60 = 438,222.80 : x
  2. Step 2: Convert to fraction form
    637,288.40/955,932.60 = 438,222.80/x
  3. Step 3: Cross multiply
    637,288.40x = 955,932.60 × 438,222.80
  4. Step 4: Simplify right side
    637,288.40x = 418,911,460,583.28
  5. Step 5: Solve for x
    x = 418,911,460,583.28/637,288.40
  6. Step 6: Final answer
    x = 657,334.20

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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.