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Finding the Fourth Proportional to 571,378.82, 788,509.18 and 326,396.01

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Solution

The fourth proportional to 571,378.82, 788,509.18 and 326,396.01 is: 450,430.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,378.82 : 788,509.18 = 326,396.01 : x
  2. Step 2: Convert to fraction form
    571,378.82/788,509.18 = 326,396.01/x
  3. Step 3: Cross multiply
    571,378.82x = 788,509.18 × 326,396.01
  4. Step 4: Simplify right side
    571,378.82x = 257,366,253,565.28
  5. Step 5: Solve for x
    x = 257,366,253,565.28/571,378.82
  6. Step 6: Final answer
    x = 450,430.16

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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.