Home / 1,111,326.12-1,666,997.34-312,688.38

Finding the Fourth Proportional to 1,111,326.12, 1,666,997.34 and 312,688.38

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Solution

The fourth proportional to 1,111,326.12, 1,666,997.34 and 312,688.38 is: 469,034.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,326.12 : 1,666,997.34 = 312,688.38 : x
  2. Step 2: Convert to fraction form
    1,111,326.12/1,666,997.34 = 312,688.38/x
  3. Step 3: Cross multiply
    1,111,326.12x = 1,666,997.34 × 312,688.38
  4. Step 4: Simplify right side
    1,111,326.12x = 521,250,697,708.91
  5. Step 5: Solve for x
    x = 521,250,697,708.91/1,111,326.12
  6. Step 6: Final answer
    x = 469,034.87

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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.