Home / 1,550,357.81-2,139,012.92-905,312.69

Finding the Fourth Proportional to 1,550,357.81, 2,139,012.92 and 905,312.69

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Solution

The fourth proportional to 1,550,357.81, 2,139,012.92 and 905,312.69 is: 1,249,050.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550,357.81 : 2,139,012.92 = 905,312.69 : x
  2. Step 2: Convert to fraction form
    1,550,357.81/2,139,012.92 = 905,312.69/x
  3. Step 3: Cross multiply
    1,550,357.81x = 2,139,012.92 × 905,312.69
  4. Step 4: Simplify right side
    1,550,357.81x = 1,936,475,532,118.17
  5. Step 5: Solve for x
    x = 1,936,475,532,118.17/1,550,357.81
  6. Step 6: Final answer
    x = 1,249,050.72

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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.