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Finding the Fourth Proportional to 538,386.40, 807,579.60 and 370,424.80

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Solution

The fourth proportional to 538,386.40, 807,579.60 and 370,424.80 is: 555,637.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,386.40 : 807,579.60 = 370,424.80 : x
  2. Step 2: Convert to fraction form
    538,386.40/807,579.60 = 370,424.80/x
  3. Step 3: Cross multiply
    538,386.40x = 807,579.60 × 370,424.80
  4. Step 4: Simplify right side
    538,386.40x = 299,147,511,814.08
  5. Step 5: Solve for x
    x = 299,147,511,814.08/538,386.40
  6. Step 6: Final answer
    x = 555,637.20

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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.