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Finding the Fourth Proportional to 630,434.40, 869,998.24 and 343,954.68

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Solution

The fourth proportional to 630,434.40, 869,998.24 and 343,954.68 is: 474,656.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,434.40 : 869,998.24 = 343,954.68 : x
  2. Step 2: Convert to fraction form
    630,434.40/869,998.24 = 343,954.68/x
  3. Step 3: Cross multiply
    630,434.40x = 869,998.24 × 343,954.68
  4. Step 4: Simplify right side
    630,434.40x = 299,239,966,239.76
  5. Step 5: Solve for x
    x = 299,239,966,239.76/630,434.40
  6. Step 6: Final answer
    x = 474,656.79

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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.