Home / 1,260,780.47-1,739,868.81-716,916.30

Finding the Fourth Proportional to 1,260,780.47, 1,739,868.81 and 716,916.30

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Solution

The fourth proportional to 1,260,780.47, 1,739,868.81 and 716,916.30 is: 989,339.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,780.47 : 1,739,868.81 = 716,916.30 : x
  2. Step 2: Convert to fraction form
    1,260,780.47/1,739,868.81 = 716,916.30/x
  3. Step 3: Cross multiply
    1,260,780.47x = 1,739,868.81 × 716,916.30
  4. Step 4: Simplify right side
    1,260,780.47x = 1,247,340,314,357.08
  5. Step 5: Solve for x
    x = 1,247,340,314,357.08/1,260,780.47
  6. Step 6: Final answer
    x = 989,339.81

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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.