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Finding the Fourth Proportional to 887,417.36, 1,224,636 and 485,009.36

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Solution

The fourth proportional to 887,417.36, 1,224,636 and 485,009.36 is: 669,312.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,417.36 : 1,224,636 = 485,009.36 : x
  2. Step 2: Convert to fraction form
    887,417.36/1,224,636 = 485,009.36/x
  3. Step 3: Cross multiply
    887,417.36x = 1,224,636 × 485,009.36
  4. Step 4: Simplify right side
    887,417.36x = 593,959,922,592.96
  5. Step 5: Solve for x
    x = 593,959,922,592.96/887,417.36
  6. Step 6: Final answer
    x = 669,312.94

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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.