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Finding the Fourth Proportional to 883,910.40, 1,326,326.40 and 385,324.80

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Solution

The fourth proportional to 883,910.40, 1,326,326.40 and 385,324.80 is: 578,188.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    883,910.40 : 1,326,326.40 = 385,324.80 : x
  2. Step 2: Convert to fraction form
    883,910.40/1,326,326.40 = 385,324.80/x
  3. Step 3: Cross multiply
    883,910.40x = 1,326,326.40 × 385,324.80
  4. Step 4: Simplify right side
    883,910.40x = 511,066,454,814.72
  5. Step 5: Solve for x
    x = 511,066,454,814.72/883,910.40
  6. Step 6: Final answer
    x = 578,188.08

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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.