Home / 917,998.20-1,376,997.30-911,777.40

Finding the Fourth Proportional to 917,998.20, 1,376,997.30 and 911,777.40

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Solution

The fourth proportional to 917,998.20, 1,376,997.30 and 911,777.40 is: 1,367,666.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,998.20 : 1,376,997.30 = 911,777.40 : x
  2. Step 2: Convert to fraction form
    917,998.20/1,376,997.30 = 911,777.40/x
  3. Step 3: Cross multiply
    917,998.20x = 1,376,997.30 × 911,777.40
  4. Step 4: Simplify right side
    917,998.20x = 1,255,515,018,001.02
  5. Step 5: Solve for x
    x = 1,255,515,018,001.02/917,998.20
  6. Step 6: Final answer
    x = 1,367,666.10

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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.