Home / 1,209,638.20-1,812,902.10-735,820.60

Finding the Fourth Proportional to 1,209,638.20, 1,812,902.10 and 735,820.60

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Solution

The fourth proportional to 1,209,638.20, 1,812,902.10 and 735,820.60 is: 1,102,784.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,638.20 : 1,812,902.10 = 735,820.60 : x
  2. Step 2: Convert to fraction form
    1,209,638.20/1,812,902.10 = 735,820.60/x
  3. Step 3: Cross multiply
    1,209,638.20x = 1,812,902.10 × 735,820.60
  4. Step 4: Simplify right side
    1,209,638.20x = 1,333,970,710,963.26
  5. Step 5: Solve for x
    x = 1,333,970,710,963.26/1,209,638.20
  6. Step 6: Final answer
    x = 1,102,784.87

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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.