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Finding the Fourth Proportional to 570,879, 787,813.02 and 316,246.68

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Solution

The fourth proportional to 570,879, 787,813.02 and 316,246.68 is: 436,420.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,879 : 787,813.02 = 316,246.68 : x
  2. Step 2: Convert to fraction form
    570,879/787,813.02 = 316,246.68/x
  3. Step 3: Cross multiply
    570,879x = 787,813.02 × 316,246.68
  4. Step 4: Simplify right side
    570,879x = 249,143,252,035.77
  5. Step 5: Solve for x
    x = 249,143,252,035.77/570,879
  6. Step 6: Final answer
    x = 436,420.42

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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.