Home / 1,288,386.56-1,931,824.92-862,407.56

Finding the Fourth Proportional to 1,288,386.56, 1,931,824.92 and 862,407.56

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Solution

The fourth proportional to 1,288,386.56, 1,931,824.92 and 862,407.56 is: 1,293,106.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,386.56 : 1,931,824.92 = 862,407.56 : x
  2. Step 2: Convert to fraction form
    1,288,386.56/1,931,824.92 = 862,407.56/x
  3. Step 3: Cross multiply
    1,288,386.56x = 1,931,824.92 × 862,407.56
  4. Step 4: Simplify right side
    1,288,386.56x = 1,666,020,415,604.40
  5. Step 5: Solve for x
    x = 1,666,020,415,604.40/1,288,386.56
  6. Step 6: Final answer
    x = 1,293,106.02

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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.