Home / 909,962.10-1,359,612.72-878,138.86

Finding the Fourth Proportional to 909,962.10, 1,359,612.72 and 878,138.86

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Solution

The fourth proportional to 909,962.10, 1,359,612.72 and 878,138.86 is: 1,312,064.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,962.10 : 1,359,612.72 = 878,138.86 : x
  2. Step 2: Convert to fraction form
    909,962.10/1,359,612.72 = 878,138.86/x
  3. Step 3: Cross multiply
    909,962.10x = 1,359,612.72 × 878,138.86
  4. Step 4: Simplify right side
    909,962.10x = 1,193,928,763,982.30
  5. Step 5: Solve for x
    x = 1,193,928,763,982.30/909,962.10
  6. Step 6: Final answer
    x = 1,312,064.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.