Home / 1,386,507.70-2,079,761.55-487,942.30

Finding the Fourth Proportional to 1,386,507.70, 2,079,761.55 and 487,942.30

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Solution

The fourth proportional to 1,386,507.70, 2,079,761.55 and 487,942.30 is: 731,913.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,507.70 : 2,079,761.55 = 487,942.30 : x
  2. Step 2: Convert to fraction form
    1,386,507.70/2,079,761.55 = 487,942.30/x
  3. Step 3: Cross multiply
    1,386,507.70x = 2,079,761.55 × 487,942.30
  4. Step 4: Simplify right side
    1,386,507.70x = 1,014,803,634,158.57
  5. Step 5: Solve for x
    x = 1,014,803,634,158.57/1,386,507.70
  6. Step 6: Final answer
    x = 731,913.45

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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.