Home / 917,019.90-1,372,905.45-812,043.90

Finding the Fourth Proportional to 917,019.90, 1,372,905.45 and 812,043.90

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Solution

The fourth proportional to 917,019.90, 1,372,905.45 and 812,043.90 is: 1,215,741.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,019.90 : 1,372,905.45 = 812,043.90 : x
  2. Step 2: Convert to fraction form
    917,019.90/1,372,905.45 = 812,043.90/x
  3. Step 3: Cross multiply
    917,019.90x = 1,372,905.45 × 812,043.90
  4. Step 4: Simplify right side
    917,019.90x = 1,114,859,495,949.25
  5. Step 5: Solve for x
    x = 1,114,859,495,949.25/917,019.90
  6. Step 6: Final answer
    x = 1,215,741.88

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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.