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Finding the Fourth Proportional to 630,433.40, 869,996.86 and 343,953.68

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Solution

The fourth proportional to 630,433.40, 869,996.86 and 343,953.68 is: 474,655.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,433.40 : 869,996.86 = 343,953.68 : x
  2. Step 2: Convert to fraction form
    630,433.40/869,996.86 = 343,953.68/x
  3. Step 3: Cross multiply
    630,433.40x = 869,996.86 × 343,953.68
  4. Step 4: Simplify right side
    630,433.40x = 299,238,621,585.45
  5. Step 5: Solve for x
    x = 299,238,621,585.45/630,433.40
  6. Step 6: Final answer
    x = 474,655.41

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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.