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Finding the Fourth Proportional to 571,085.58, 788,086.35 and 316,434.54

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Solution

The fourth proportional to 571,085.58, 788,086.35 and 316,434.54 is: 436,673.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,085.58 : 788,086.35 = 316,434.54 : x
  2. Step 2: Convert to fraction form
    571,085.58/788,086.35 = 316,434.54/x
  3. Step 3: Cross multiply
    571,085.58x = 788,086.35 × 316,434.54
  4. Step 4: Simplify right side
    571,085.58x = 249,377,741,642.53
  5. Step 5: Solve for x
    x = 249,377,741,642.53/571,085.58
  6. Step 6: Final answer
    x = 436,673.15

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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.