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Finding the Fourth Proportional to 538,540.40, 807,810.60 and 370,578.80

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Solution

The fourth proportional to 538,540.40, 807,810.60 and 370,578.80 is: 555,868.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,540.40 : 807,810.60 = 370,578.80 : x
  2. Step 2: Convert to fraction form
    538,540.40/807,810.60 = 370,578.80/x
  3. Step 3: Cross multiply
    538,540.40x = 807,810.60 × 370,578.80
  4. Step 4: Simplify right side
    538,540.40x = 299,357,482,775.28
  5. Step 5: Solve for x
    x = 299,357,482,775.28/538,540.40
  6. Step 6: Final answer
    x = 555,868.20

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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.