Home / 538,977.40-808,466.10-420,004.60

Finding the Fourth Proportional to 538,977.40, 808,466.10 and 420,004.60

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Solution

The fourth proportional to 538,977.40, 808,466.10 and 420,004.60 is: 630,006.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,977.40 : 808,466.10 = 420,004.60 : x
  2. Step 2: Convert to fraction form
    538,977.40/808,466.10 = 420,004.60/x
  3. Step 3: Cross multiply
    538,977.40x = 808,466.10 × 420,004.60
  4. Step 4: Simplify right side
    538,977.40x = 339,559,480,944.06
  5. Step 5: Solve for x
    x = 339,559,480,944.06/538,977.40
  6. Step 6: Final answer
    x = 630,006.90

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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.