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Finding the Fourth Proportional to 630,431.33, 869,994.23 and 343,951.45

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Solution

The fourth proportional to 630,431.33, 869,994.23 and 343,951.45 is: 474,652.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,431.33 : 869,994.23 = 343,951.45 : x
  2. Step 2: Convert to fraction form
    630,431.33/869,994.23 = 343,951.45/x
  3. Step 3: Cross multiply
    630,431.33x = 869,994.23 × 343,951.45
  4. Step 4: Simplify right side
    630,431.33x = 299,235,773,005.39
  5. Step 5: Solve for x
    x = 299,235,773,005.39/630,431.33
  6. Step 6: Final answer
    x = 474,652.45

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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.