Home / 820,400.48-1,131,837-513,943.52

Finding the Fourth Proportional to 820,400.48, 1,131,837 and 513,943.52

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Solution

The fourth proportional to 820,400.48, 1,131,837 and 513,943.52 is: 709,044.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,400.48 : 1,131,837 = 513,943.52 : x
  2. Step 2: Convert to fraction form
    820,400.48/1,131,837 = 513,943.52/x
  3. Step 3: Cross multiply
    820,400.48x = 1,131,837 × 513,943.52
  4. Step 4: Simplify right side
    820,400.48x = 581,700,291,846.24
  5. Step 5: Solve for x
    x = 581,700,291,846.24/820,400.48
  6. Step 6: Final answer
    x = 709,044.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.