Home / 920,401.67-1,270,142.20-506,930.51

Finding the Fourth Proportional to 920,401.67, 1,270,142.20 and 506,930.51

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Solution

The fourth proportional to 920,401.67, 1,270,142.20 and 506,930.51 is: 699,557.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,401.67 : 1,270,142.20 = 506,930.51 : x
  2. Step 2: Convert to fraction form
    920,401.67/1,270,142.20 = 506,930.51/x
  3. Step 3: Cross multiply
    920,401.67x = 1,270,142.20 × 506,930.51
  4. Step 4: Simplify right side
    920,401.67x = 643,873,837,027.54
  5. Step 5: Solve for x
    x = 643,873,837,027.54/920,401.67
  6. Step 6: Final answer
    x = 699,557.44

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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.