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Finding the Fourth Proportional to 571,437.69, 788,585.12 and 316,788.87

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Solution

The fourth proportional to 571,437.69, 788,585.12 and 316,788.87 is: 437,169.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,437.69 : 788,585.12 = 316,788.87 : x
  2. Step 2: Convert to fraction form
    571,437.69/788,585.12 = 316,788.87/x
  3. Step 3: Cross multiply
    571,437.69x = 788,585.12 × 316,788.87
  4. Step 4: Simplify right side
    571,437.69x = 249,814,991,624.82
  5. Step 5: Solve for x
    x = 249,814,991,624.82/571,437.69
  6. Step 6: Final answer
    x = 437,169.26

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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.