Home / 1,211,781.60-1,817,672.40-788,767.20

Finding the Fourth Proportional to 1,211,781.60, 1,817,672.40 and 788,767.20

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Solution

The fourth proportional to 1,211,781.60, 1,817,672.40 and 788,767.20 is: 1,183,150.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,781.60 : 1,817,672.40 = 788,767.20 : x
  2. Step 2: Convert to fraction form
    1,211,781.60/1,817,672.40 = 788,767.20/x
  3. Step 3: Cross multiply
    1,211,781.60x = 1,817,672.40 × 788,767.20
  4. Step 4: Simplify right side
    1,211,781.60x = 1,433,720,369,465.28
  5. Step 5: Solve for x
    x = 1,433,720,369,465.28/1,211,781.60
  6. Step 6: Final answer
    x = 1,183,150.80

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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.