Home / 1,311,206.60-1,966,421.10-512,028.20

Finding the Fourth Proportional to 1,311,206.60, 1,966,421.10 and 512,028.20

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Solution

The fourth proportional to 1,311,206.60, 1,966,421.10 and 512,028.20 is: 767,890.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,206.60 : 1,966,421.10 = 512,028.20 : x
  2. Step 2: Convert to fraction form
    1,311,206.60/1,966,421.10 = 512,028.20/x
  3. Step 3: Cross multiply
    1,311,206.60x = 1,966,421.10 × 512,028.20
  4. Step 4: Simplify right side
    1,311,206.60x = 1,006,863,056,275.02
  5. Step 5: Solve for x
    x = 1,006,863,056,275.02/1,311,206.60
  6. Step 6: Final answer
    x = 767,890.47

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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.