Home / 826,389.50-1,240,248.54-427,147.22

Finding the Fourth Proportional to 826,389.50, 1,240,248.54 and 427,147.22

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Solution

The fourth proportional to 826,389.50, 1,240,248.54 and 427,147.22 is: 641,064.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,389.50 : 1,240,248.54 = 427,147.22 : x
  2. Step 2: Convert to fraction form
    826,389.50/1,240,248.54 = 427,147.22/x
  3. Step 3: Cross multiply
    826,389.50x = 1,240,248.54 × 427,147.22
  4. Step 4: Simplify right side
    826,389.50x = 529,768,715,970.06
  5. Step 5: Solve for x
    x = 529,768,715,970.06/826,389.50
  6. Step 6: Final answer
    x = 641,064.19

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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.