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Finding the Fourth Proportional to 617,149.85, 851,730.93 and 355,514.18

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Solution

The fourth proportional to 617,149.85, 851,730.93 and 355,514.18 is: 490,646.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,149.85 : 851,730.93 = 355,514.18 : x
  2. Step 2: Convert to fraction form
    617,149.85/851,730.93 = 355,514.18/x
  3. Step 3: Cross multiply
    617,149.85x = 851,730.93 × 355,514.18
  4. Step 4: Simplify right side
    617,149.85x = 302,802,423,159.59
  5. Step 5: Solve for x
    x = 302,802,423,159.59/617,149.85
  6. Step 6: Final answer
    x = 490,646.52

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1.5x scale

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.