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Finding the Fourth Proportional to 605,001.40, 907,502.10 and 405,417.40

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Solution

The fourth proportional to 605,001.40, 907,502.10 and 405,417.40 is: 608,126.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,001.40 : 907,502.10 = 405,417.40 : x
  2. Step 2: Convert to fraction form
    605,001.40/907,502.10 = 405,417.40/x
  3. Step 3: Cross multiply
    605,001.40x = 907,502.10 × 405,417.40
  4. Step 4: Simplify right side
    605,001.40x = 367,917,141,876.54
  5. Step 5: Solve for x
    x = 367,917,141,876.54/605,001.40
  6. Step 6: Final answer
    x = 608,126.10

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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.