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Finding the Fourth Proportional to 571,005.84, 787,953.78 and 316,338.60

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Solution

The fourth proportional to 571,005.84, 787,953.78 and 316,338.60 is: 436,528.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,005.84 : 787,953.78 = 316,338.60 : x
  2. Step 2: Convert to fraction form
    571,005.84/787,953.78 = 316,338.60/x
  3. Step 3: Cross multiply
    571,005.84x = 787,953.78 × 316,338.60
  4. Step 4: Simplify right side
    571,005.84x = 249,260,195,629.91
  5. Step 5: Solve for x
    x = 249,260,195,629.91/571,005.84
  6. Step 6: Final answer
    x = 436,528.28

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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.