Home / 515,097,808.40-772,646,712.60-310,520,579.60

Finding the Fourth Proportional to 515,097,808.40, 772,646,712.60 and 310,520,579.60

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Solution

The fourth proportional to 515,097,808.40, 772,646,712.60 and 310,520,579.60 is: 465,780,869.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,097,808.40 : 772,646,712.60 = 310,520,579.60 : x
  2. Step 2: Convert to fraction form
    515,097,808.40/772,646,712.60 = 310,520,579.60/x
  3. Step 3: Cross multiply
    515,097,808.40x = 772,646,712.60 × 310,520,579.60
  4. Step 4: Simplify right side
    515,097,808.40x = 239,922,705,022,586,656
  5. Step 5: Solve for x
    x = 239,922,705,022,586,656/515,097,808.40
  6. Step 6: Final answer
    x = 465,780,869.40

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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.