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Finding the Fourth Proportional to 630,432.65, 869,996.20 and 343,952.74

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Solution

The fourth proportional to 630,432.65, 869,996.20 and 343,952.74 is: 474,654.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,432.65 : 869,996.20 = 343,952.74 : x
  2. Step 2: Convert to fraction form
    630,432.65/869,996.20 = 343,952.74/x
  3. Step 3: Cross multiply
    630,432.65x = 869,996.20 × 343,952.74
  4. Step 4: Simplify right side
    630,432.65x = 299,237,574,700.25
  5. Step 5: Solve for x
    x = 299,237,574,700.25/630,432.65
  6. Step 6: Final answer
    x = 474,654.31

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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.