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Finding the Fourth Proportional to 527,924.86, 788,987.47 and 386,067.94

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Solution

The fourth proportional to 527,924.86, 788,987.47 and 386,067.94 is: 576,981.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,924.86 : 788,987.47 = 386,067.94 : x
  2. Step 2: Convert to fraction form
    527,924.86/788,987.47 = 386,067.94/x
  3. Step 3: Cross multiply
    527,924.86x = 788,987.47 × 386,067.94
  4. Step 4: Simplify right side
    527,924.86x = 304,602,767,228.71
  5. Step 5: Solve for x
    x = 304,602,767,228.71/527,924.86
  6. Step 6: Final answer
    x = 576,981.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.