Home / 520,928,978.66-780,799,084.02-209,837,533.62

Finding the Fourth Proportional to 520,928,978.66, 780,799,084.02 and 209,837,533.62

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Solution

The fourth proportional to 520,928,978.66, 780,799,084.02 and 209,837,533.62 is: 314,516,874.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,928,978.66 : 780,799,084.02 = 209,837,533.62 : x
  2. Step 2: Convert to fraction form
    520,928,978.66/780,799,084.02 = 209,837,533.62/x
  3. Step 3: Cross multiply
    520,928,978.66x = 780,799,084.02 × 209,837,533.62
  4. Step 4: Simplify right side
    520,928,978.66x = 163,840,954,043,511,968
  5. Step 5: Solve for x
    x = 163,840,954,043,511,968/520,928,978.66
  6. Step 6: Final answer
    x = 314,516,874.19

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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.