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Finding the Fourth Proportional to 571,295.66, 787,978.60 and 377,478.86

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Solution

The fourth proportional to 571,295.66, 787,978.60 and 377,478.86 is: 520,650.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,295.66 : 787,978.60 = 377,478.86 : x
  2. Step 2: Convert to fraction form
    571,295.66/787,978.60 = 377,478.86/x
  3. Step 3: Cross multiply
    571,295.66x = 787,978.60 × 377,478.86
  4. Step 4: Simplify right side
    571,295.66x = 297,445,258,748.81
  5. Step 5: Solve for x
    x = 297,445,258,748.81/571,295.66
  6. Step 6: Final answer
    x = 520,650.31

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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.