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Finding the Fourth Proportional to 571,400.22, 788,541.20 and 313,300.74

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Solution

The fourth proportional to 571,400.22, 788,541.20 and 313,300.74 is: 432,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,400.22 : 788,541.20 = 313,300.74 : x
  2. Step 2: Convert to fraction form
    571,400.22/788,541.20 = 313,300.74/x
  3. Step 3: Cross multiply
    571,400.22x = 788,541.20 × 313,300.74
  4. Step 4: Simplify right side
    571,400.22x = 247,050,539,913.98
  5. Step 5: Solve for x
    x = 247,050,539,913.98/571,400.22
  6. Step 6: Final answer
    x = 432,359.90

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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.