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Finding the Fourth Proportional to 520,417.56, 718,177.44 and 290,983.02

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Solution

The fourth proportional to 520,417.56, 718,177.44 and 290,983.02 is: 401,557.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,417.56 : 718,177.44 = 290,983.02 : x
  2. Step 2: Convert to fraction form
    520,417.56/718,177.44 = 290,983.02/x
  3. Step 3: Cross multiply
    520,417.56x = 718,177.44 × 290,983.02
  4. Step 4: Simplify right side
    520,417.56x = 208,977,440,387.07
  5. Step 5: Solve for x
    x = 208,977,440,387.07/520,417.56
  6. Step 6: Final answer
    x = 401,557.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.