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Finding the Fourth Proportional to 570,158,652.60, 786,818,940.66 and 309,398,268.60

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Solution

The fourth proportional to 570,158,652.60, 786,818,940.66 and 309,398,268.60 is: 426,969,610.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,158,652.60 : 786,818,940.66 = 309,398,268.60 : x
  2. Step 2: Convert to fraction form
    570,158,652.60/786,818,940.66 = 309,398,268.60/x
  3. Step 3: Cross multiply
    570,158,652.60x = 786,818,940.66 × 309,398,268.60
  4. Step 4: Simplify right side
    570,158,652.60x = 243,440,417,941,890,144
  5. Step 5: Solve for x
    x = 243,440,417,941,890,144/570,158,652.60
  6. Step 6: Final answer
    x = 426,969,610.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.