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Finding the Fourth Proportional to 570,900.66, 787,890.90 and 316,275.54

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Solution

The fourth proportional to 570,900.66, 787,890.90 and 316,275.54 is: 436,486.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,900.66 : 787,890.90 = 316,275.54 : x
  2. Step 2: Convert to fraction form
    570,900.66/787,890.90 = 316,275.54/x
  3. Step 3: Cross multiply
    570,900.66x = 787,890.90 × 316,275.54
  4. Step 4: Simplify right side
    570,900.66x = 249,190,619,858.59
  5. Step 5: Solve for x
    x = 249,190,619,858.59/570,900.66
  6. Step 6: Final answer
    x = 436,486.83

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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.