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Finding the Fourth Proportional to 571,688.78, 788,804.30 and 329,919.98

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Solution

The fourth proportional to 571,688.78, 788,804.30 and 329,919.98 is: 455,216.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,688.78 : 788,804.30 = 329,919.98 : x
  2. Step 2: Convert to fraction form
    571,688.78/788,804.30 = 329,919.98/x
  3. Step 3: Cross multiply
    571,688.78x = 788,804.30 × 329,919.98
  4. Step 4: Simplify right side
    571,688.78x = 260,242,298,879.91
  5. Step 5: Solve for x
    x = 260,242,298,879.91/571,688.78
  6. Step 6: Final answer
    x = 455,216.73

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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.