Home / 1,178,995.79-1,768,867.36-420,820.47

Finding the Fourth Proportional to 1,178,995.79, 1,768,867.36 and 420,820.47

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Solution

The fourth proportional to 1,178,995.79, 1,768,867.36 and 420,820.47 is: 631,364.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,995.79 : 1,768,867.36 = 420,820.47 : x
  2. Step 2: Convert to fraction form
    1,178,995.79/1,768,867.36 = 420,820.47/x
  3. Step 3: Cross multiply
    1,178,995.79x = 1,768,867.36 × 420,820.47
  4. Step 4: Simplify right side
    1,178,995.79x = 744,375,592,750.81
  5. Step 5: Solve for x
    x = 744,375,592,750.81/1,178,995.79
  6. Step 6: Final answer
    x = 631,364.08

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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.