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Finding the Fourth Proportional to 630,434.88, 869,998.86 and 343,954.80

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Solution

The fourth proportional to 630,434.88, 869,998.86 and 343,954.80 is: 474,656.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,434.88 : 869,998.86 = 343,954.80 : x
  2. Step 2: Convert to fraction form
    630,434.88/869,998.86 = 343,954.80/x
  3. Step 3: Cross multiply
    630,434.88x = 869,998.86 × 343,954.80
  4. Step 4: Simplify right side
    630,434.88x = 299,240,283,891.53
  5. Step 5: Solve for x
    x = 299,240,283,891.53/630,434.88
  6. Step 6: Final answer
    x = 474,656.93

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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.