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Finding the Fourth Proportional to 635,695.65, 877,275.82 and 345,307.13

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Solution

The fourth proportional to 635,695.65, 877,275.82 and 345,307.13 is: 476,532.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,695.65 : 877,275.82 = 345,307.13 : x
  2. Step 2: Convert to fraction form
    635,695.65/877,275.82 = 345,307.13/x
  3. Step 3: Cross multiply
    635,695.65x = 877,275.82 × 345,307.13
  4. Step 4: Simplify right side
    635,695.65x = 302,929,589,509.68
  5. Step 5: Solve for x
    x = 302,929,589,509.68/635,695.65
  6. Step 6: Final answer
    x = 476,532.43

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Double scale
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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.