Home / 905,809.61-1,250,019.84-518,630.96

Finding the Fourth Proportional to 905,809.61, 1,250,019.84 and 518,630.96

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Solution

The fourth proportional to 905,809.61, 1,250,019.84 and 518,630.96 is: 715,712.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,809.61 : 1,250,019.84 = 518,630.96 : x
  2. Step 2: Convert to fraction form
    905,809.61/1,250,019.84 = 518,630.96/x
  3. Step 3: Cross multiply
    905,809.61x = 1,250,019.84 × 518,630.96
  4. Step 4: Simplify right side
    905,809.61x = 648,298,996,466.00
  5. Step 5: Solve for x
    x = 648,298,996,466.00/905,809.61
  6. Step 6: Final answer
    x = 715,712.21

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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.