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Finding the Fourth Proportional to 571,688.75, 788,931.60 and 313,567.80

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Solution

The fourth proportional to 571,688.75, 788,931.60 and 313,567.80 is: 432,724.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,688.75 : 788,931.60 = 313,567.80 : x
  2. Step 2: Convert to fraction form
    571,688.75/788,931.60 = 313,567.80/x
  3. Step 3: Cross multiply
    571,688.75x = 788,931.60 × 313,567.80
  4. Step 4: Simplify right side
    571,688.75x = 247,383,546,162.48
  5. Step 5: Solve for x
    x = 247,383,546,162.48/571,688.75
  6. Step 6: Final answer
    x = 432,724.18

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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.