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Finding the Fourth Proportional to 570,625.29, 787,486.64 and 315,976.47

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Solution

The fourth proportional to 570,625.29, 787,486.64 and 315,976.47 is: 436,060.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,625.29 : 787,486.64 = 315,976.47 : x
  2. Step 2: Convert to fraction form
    570,625.29/787,486.64 = 315,976.47/x
  3. Step 3: Cross multiply
    570,625.29x = 787,486.64 × 315,976.47
  4. Step 4: Simplify right side
    570,625.29x = 248,827,248,679.36
  5. Step 5: Solve for x
    x = 248,827,248,679.36/570,625.29
  6. Step 6: Final answer
    x = 436,060.68

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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.