Home / 1,138,423.60-1,707,416.70-339,731.20

Finding the Fourth Proportional to 1,138,423.60, 1,707,416.70 and 339,731.20

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Solution

The fourth proportional to 1,138,423.60, 1,707,416.70 and 339,731.20 is: 509,531.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,423.60 : 1,707,416.70 = 339,731.20 : x
  2. Step 2: Convert to fraction form
    1,138,423.60/1,707,416.70 = 339,731.20/x
  3. Step 3: Cross multiply
    1,138,423.60x = 1,707,416.70 × 339,731.20
  4. Step 4: Simplify right side
    1,138,423.60x = 580,062,724,391.04
  5. Step 5: Solve for x
    x = 580,062,724,391.04/1,138,423.60
  6. Step 6: Final answer
    x = 509,531.54

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1.5x scale

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.