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Finding the Fourth Proportional to 570,764.60, 786,908.22 and 491,048.36

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Solution

The fourth proportional to 570,764.60, 786,908.22 and 491,048.36 is: 677,004.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,764.60 : 786,908.22 = 491,048.36 : x
  2. Step 2: Convert to fraction form
    570,764.60/786,908.22 = 491,048.36/x
  3. Step 3: Cross multiply
    570,764.60x = 786,908.22 × 491,048.36
  4. Step 4: Simplify right side
    570,764.60x = 386,409,990,901.52
  5. Step 5: Solve for x
    x = 386,409,990,901.52/570,764.60
  6. Step 6: Final answer
    x = 677,004.13

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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.