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Finding the Fourth Proportional to 570,811.50, 787,719.87 and 316,179.09

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Solution

The fourth proportional to 570,811.50, 787,719.87 and 316,179.09 is: 436,327.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,811.50 : 787,719.87 = 316,179.09 : x
  2. Step 2: Convert to fraction form
    570,811.50/787,719.87 = 316,179.09/x
  3. Step 3: Cross multiply
    570,811.50x = 787,719.87 × 316,179.09
  4. Step 4: Simplify right side
    570,811.50x = 249,060,551,671.52
  5. Step 5: Solve for x
    x = 249,060,551,671.52/570,811.50
  6. Step 6: Final answer
    x = 436,327.14

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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.