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Finding the Fourth Proportional to 808,663.36, 1,212,978.48 and 359,262.40

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Solution

The fourth proportional to 808,663.36, 1,212,978.48 and 359,262.40 is: 538,886.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,663.36 : 1,212,978.48 = 359,262.40 : x
  2. Step 2: Convert to fraction form
    808,663.36/1,212,978.48 = 359,262.40/x
  3. Step 3: Cross multiply
    808,663.36x = 1,212,978.48 × 359,262.40
  4. Step 4: Simplify right side
    808,663.36x = 435,777,559,873.15
  5. Step 5: Solve for x
    x = 435,777,559,873.15/808,663.36
  6. Step 6: Final answer
    x = 538,886.24

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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.