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Finding the Fourth Proportional to 570,370.63, 787,111.48 and 315,721.82

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Solution

The fourth proportional to 570,370.63, 787,111.48 and 315,721.82 is: 435,696.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,370.63 : 787,111.48 = 315,721.82 : x
  2. Step 2: Convert to fraction form
    570,370.63/787,111.48 = 315,721.82/x
  3. Step 3: Cross multiply
    570,370.63x = 787,111.48 × 315,721.82
  4. Step 4: Simplify right side
    570,370.63x = 248,508,265,167.49
  5. Step 5: Solve for x
    x = 248,508,265,167.49/570,370.63
  6. Step 6: Final answer
    x = 435,696.11

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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.