Home / 1,189,148.28-1,783,994.88-515,342.68

Finding the Fourth Proportional to 1,189,148.28, 1,783,994.88 and 515,342.68

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Solution

The fourth proportional to 1,189,148.28, 1,783,994.88 and 515,342.68 is: 773,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,148.28 : 1,783,994.88 = 515,342.68 : x
  2. Step 2: Convert to fraction form
    1,189,148.28/1,783,994.88 = 515,342.68/x
  3. Step 3: Cross multiply
    1,189,148.28x = 1,783,994.88 × 515,342.68
  4. Step 4: Simplify right side
    1,189,148.28x = 919,368,702,565.48
  5. Step 5: Solve for x
    x = 919,368,702,565.48/1,189,148.28
  6. Step 6: Final answer
    x = 773,132.10

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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.