Home / 1,348,929.36-1,861,910.40-890,378.64

Finding the Fourth Proportional to 1,348,929.36, 1,861,910.40 and 890,378.64

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Solution

The fourth proportional to 1,348,929.36, 1,861,910.40 and 890,378.64 is: 1,228,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348,929.36 : 1,861,910.40 = 890,378.64 : x
  2. Step 2: Convert to fraction form
    1,348,929.36/1,861,910.40 = 890,378.64/x
  3. Step 3: Cross multiply
    1,348,929.36x = 1,861,910.40 × 890,378.64
  4. Step 4: Simplify right side
    1,348,929.36x = 1,657,805,249,753.86
  5. Step 5: Solve for x
    x = 1,657,805,249,753.86/1,348,929.36
  6. Step 6: Final answer
    x = 1,228,978.55

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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.