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Finding the Fourth Proportional to 996,903.30, 1,495,354.95 and 919,920.90

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Solution

The fourth proportional to 996,903.30, 1,495,354.95 and 919,920.90 is: 1,379,881.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,903.30 : 1,495,354.95 = 919,920.90 : x
  2. Step 2: Convert to fraction form
    996,903.30/1,495,354.95 = 919,920.90/x
  3. Step 3: Cross multiply
    996,903.30x = 1,495,354.95 × 919,920.90
  4. Step 4: Simplify right side
    996,903.30x = 1,375,608,271,423.46
  5. Step 5: Solve for x
    x = 1,375,608,271,423.46/996,903.30
  6. Step 6: Final answer
    x = 1,379,881.35

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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.