Home / 1,390,710.46-1,918,851.51-787,098.46

Finding the Fourth Proportional to 1,390,710.46, 1,918,851.51 and 787,098.46

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Solution

The fourth proportional to 1,390,710.46, 1,918,851.51 and 787,098.46 is: 1,086,009.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,710.46 : 1,918,851.51 = 787,098.46 : x
  2. Step 2: Convert to fraction form
    1,390,710.46/1,918,851.51 = 787,098.46/x
  3. Step 3: Cross multiply
    1,390,710.46x = 1,918,851.51 × 787,098.46
  4. Step 4: Simplify right side
    1,390,710.46x = 1,510,325,068,489.67
  5. Step 5: Solve for x
    x = 1,510,325,068,489.67/1,390,710.46
  6. Step 6: Final answer
    x = 1,086,009.71

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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.