Home / 918,005.70-1,377,008.55-911,784.90

Finding the Fourth Proportional to 918,005.70, 1,377,008.55 and 911,784.90

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Solution

The fourth proportional to 918,005.70, 1,377,008.55 and 911,784.90 is: 1,367,677.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,005.70 : 1,377,008.55 = 911,784.90 : x
  2. Step 2: Convert to fraction form
    918,005.70/1,377,008.55 = 911,784.90/x
  3. Step 3: Cross multiply
    918,005.70x = 1,377,008.55 × 911,784.90
  4. Step 4: Simplify right side
    918,005.70x = 1,255,535,603,060.90
  5. Step 5: Solve for x
    x = 1,255,535,603,060.90/918,005.70
  6. Step 6: Final answer
    x = 1,367,677.35

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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.