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Finding the Fourth Proportional to 538,938.90, 808,408.35 and 370,977.30

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Solution

The fourth proportional to 538,938.90, 808,408.35 and 370,977.30 is: 556,465.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,938.90 : 808,408.35 = 370,977.30 : x
  2. Step 2: Convert to fraction form
    538,938.90/808,408.35 = 370,977.30/x
  3. Step 3: Cross multiply
    538,938.90x = 808,408.35 × 370,977.30
  4. Step 4: Simplify right side
    538,938.90x = 299,901,146,980.46
  5. Step 5: Solve for x
    x = 299,901,146,980.46/538,938.90
  6. Step 6: Final answer
    x = 556,465.95

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Similar ratio
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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.