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Finding the Fourth Proportional to 617,130.34, 851,613.69 and 359,007.91

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Solution

The fourth proportional to 617,130.34, 851,613.69 and 359,007.91 is: 495,415.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,130.34 : 851,613.69 = 359,007.91 : x
  2. Step 2: Convert to fraction form
    617,130.34/851,613.69 = 359,007.91/x
  3. Step 3: Cross multiply
    617,130.34x = 851,613.69 × 359,007.91
  4. Step 4: Simplify right side
    617,130.34x = 305,736,050,974.29
  5. Step 5: Solve for x
    x = 305,736,050,974.29/617,130.34
  6. Step 6: Final answer
    x = 495,415.69

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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.