Home / 920,400.99-1,270,141.25-506,929.83

Finding the Fourth Proportional to 920,400.99, 1,270,141.25 and 506,929.83

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Solution

The fourth proportional to 920,400.99, 1,270,141.25 and 506,929.83 is: 699,556.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,400.99 : 1,270,141.25 = 506,929.83 : x
  2. Step 2: Convert to fraction form
    920,400.99/1,270,141.25 = 506,929.83/x
  3. Step 3: Cross multiply
    920,400.99x = 1,270,141.25 × 506,929.83
  4. Step 4: Simplify right side
    920,400.99x = 643,872,481,587.78
  5. Step 5: Solve for x
    x = 643,872,481,587.78/920,400.99
  6. Step 6: Final answer
    x = 699,556.49

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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.