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Finding the Fourth Proportional to 570,881.01, 787,068.99 and 491,164.86

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Solution

The fourth proportional to 570,881.01, 787,068.99 and 491,164.86 is: 677,164.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,881.01 : 787,068.99 = 491,164.86 : x
  2. Step 2: Convert to fraction form
    570,881.01/787,068.99 = 491,164.86/x
  3. Step 3: Cross multiply
    570,881.01x = 787,068.99 × 491,164.86
  4. Step 4: Simplify right side
    570,881.01x = 386,580,630,283.69
  5. Step 5: Solve for x
    x = 386,580,630,283.69/570,881.01
  6. Step 6: Final answer
    x = 677,164.98

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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.