Home / 920,390.12-1,270,196.06-506,926.82

Finding the Fourth Proportional to 920,390.12, 1,270,196.06 and 506,926.82

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Solution

The fourth proportional to 920,390.12, 1,270,196.06 and 506,926.82 is: 699,590.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,390.12 : 1,270,196.06 = 506,926.82 : x
  2. Step 2: Convert to fraction form
    920,390.12/1,270,196.06 = 506,926.82/x
  3. Step 3: Cross multiply
    920,390.12x = 1,270,196.06 × 506,926.82
  4. Step 4: Simplify right side
    920,390.12x = 643,896,449,472.33
  5. Step 5: Solve for x
    x = 643,896,449,472.33/920,390.12
  6. Step 6: Final answer
    x = 699,590.79

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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.