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Finding the Fourth Proportional to 571,391.25, 788,515.56 and 313,265.12

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Solution

The fourth proportional to 571,391.25, 788,515.56 and 313,265.12 is: 432,303.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,391.25 : 788,515.56 = 313,265.12 : x
  2. Step 2: Convert to fraction form
    571,391.25/788,515.56 = 313,265.12/x
  3. Step 3: Cross multiply
    571,391.25x = 788,515.56 × 313,265.12
  4. Step 4: Simplify right side
    571,391.25x = 247,014,417,582.69
  5. Step 5: Solve for x
    x = 247,014,417,582.69/571,391.25
  6. Step 6: Final answer
    x = 432,303.47

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1.5x scale

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.