Home / 778,830.40-1,168,159.20-217,921.60

Finding the Fourth Proportional to 778,830.40, 1,168,159.20 and 217,921.60

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Solution

The fourth proportional to 778,830.40, 1,168,159.20 and 217,921.60 is: 326,858.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,830.40 : 1,168,159.20 = 217,921.60 : x
  2. Step 2: Convert to fraction form
    778,830.40/1,168,159.20 = 217,921.60/x
  3. Step 3: Cross multiply
    778,830.40x = 1,168,159.20 × 217,921.60
  4. Step 4: Simplify right side
    778,830.40x = 254,567,121,918.72
  5. Step 5: Solve for x
    x = 254,567,121,918.72/778,830.40
  6. Step 6: Final answer
    x = 326,858.22

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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.