Home / 743,823.40-1,115,735.10-459,740.20

Finding the Fourth Proportional to 743,823.40, 1,115,735.10 and 459,740.20

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Solution

The fourth proportional to 743,823.40, 1,115,735.10 and 459,740.20 is: 689,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,823.40 : 1,115,735.10 = 459,740.20 : x
  2. Step 2: Convert to fraction form
    743,823.40/1,115,735.10 = 459,740.20/x
  3. Step 3: Cross multiply
    743,823.40x = 1,115,735.10 × 459,740.20
  4. Step 4: Simplify right side
    743,823.40x = 512,948,278,021.02
  5. Step 5: Solve for x
    x = 512,948,278,021.02/743,823.40
  6. Step 6: Final answer
    x = 689,610.30

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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.