Home / 743,423.76-1,114,967.52-343,845.28

Finding the Fourth Proportional to 743,423.76, 1,114,967.52 and 343,845.28

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Solution

The fourth proportional to 743,423.76, 1,114,967.52 and 343,845.28 is: 515,690.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,423.76 : 1,114,967.52 = 343,845.28 : x
  2. Step 2: Convert to fraction form
    743,423.76/1,114,967.52 = 343,845.28/x
  3. Step 3: Cross multiply
    743,423.76x = 1,114,967.52 × 343,845.28
  4. Step 4: Simplify right side
    743,423.76x = 383,376,319,105.31
  5. Step 5: Solve for x
    x = 383,376,319,105.31/743,423.76
  6. Step 6: Final answer
    x = 515,690.16

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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.