Home / 1,210,131.60-1,815,197.40-787,117.20

Finding the Fourth Proportional to 1,210,131.60, 1,815,197.40 and 787,117.20

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Solution

The fourth proportional to 1,210,131.60, 1,815,197.40 and 787,117.20 is: 1,180,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,131.60 : 1,815,197.40 = 787,117.20 : x
  2. Step 2: Convert to fraction form
    1,210,131.60/1,815,197.40 = 787,117.20/x
  3. Step 3: Cross multiply
    1,210,131.60x = 1,815,197.40 × 787,117.20
  4. Step 4: Simplify right side
    1,210,131.60x = 1,428,773,094,935.28
  5. Step 5: Solve for x
    x = 1,428,773,094,935.28/1,210,131.60
  6. Step 6: Final answer
    x = 1,180,675.80

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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.