Home / 458,428,858.60-687,643,287.90-313,310,036.20

Finding the Fourth Proportional to 458,428,858.60, 687,643,287.90 and 313,310,036.20

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Solution

The fourth proportional to 458,428,858.60, 687,643,287.90 and 313,310,036.20 is: 469,965,054.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,428,858.60 : 687,643,287.90 = 313,310,036.20 : x
  2. Step 2: Convert to fraction form
    458,428,858.60/687,643,287.90 = 313,310,036.20/x
  3. Step 3: Cross multiply
    458,428,858.60x = 687,643,287.90 × 313,310,036.20
  4. Step 4: Simplify right side
    458,428,858.60x = 215,445,543,424,636,000
  5. Step 5: Solve for x
    x = 215,445,543,424,636,000/458,428,858.60
  6. Step 6: Final answer
    x = 469,965,054.30

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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.