Home / 778,881.12-1,167,903.72-399,645.60

Finding the Fourth Proportional to 778,881.12, 1,167,903.72 and 399,645.60

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Solution

The fourth proportional to 778,881.12, 1,167,903.72 and 399,645.60 is: 599,253.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,881.12 : 1,167,903.72 = 399,645.60 : x
  2. Step 2: Convert to fraction form
    778,881.12/1,167,903.72 = 399,645.60/x
  3. Step 3: Cross multiply
    778,881.12x = 1,167,903.72 × 399,645.60
  4. Step 4: Simplify right side
    778,881.12x = 466,747,582,921.63
  5. Step 5: Solve for x
    x = 466,747,582,921.63/778,881.12
  6. Step 6: Final answer
    x = 599,253.94

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1.5x scale

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.