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Finding the Fourth Proportional to 710,613.63, 980,605.17 and 388,326.24

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Solution

The fourth proportional to 710,613.63, 980,605.17 and 388,326.24 is: 535,867.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,613.63 : 980,605.17 = 388,326.24 : x
  2. Step 2: Convert to fraction form
    710,613.63/980,605.17 = 388,326.24/x
  3. Step 3: Cross multiply
    710,613.63x = 980,605.17 × 388,326.24
  4. Step 4: Simplify right side
    710,613.63x = 380,794,718,590.66
  5. Step 5: Solve for x
    x = 380,794,718,590.66/710,613.63
  6. Step 6: Final answer
    x = 535,867.46

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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.