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Finding the Fourth Proportional to 571,099.40, 788,121.82 and 316,454.84

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Solution

The fourth proportional to 571,099.40, 788,121.82 and 316,454.84 is: 436,710.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,099.40 : 788,121.82 = 316,454.84 : x
  2. Step 2: Convert to fraction form
    571,099.40/788,121.82 = 316,454.84/x
  3. Step 3: Cross multiply
    571,099.40x = 788,121.82 × 316,454.84
  4. Step 4: Simplify right side
    571,099.40x = 249,404,964,448.61
  5. Step 5: Solve for x
    x = 249,404,964,448.61/571,099.40
  6. Step 6: Final answer
    x = 436,710.25

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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.