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Finding the Fourth Proportional to 630,450.60, 869,989.86 and 343,968.36

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Solution

The fourth proportional to 630,450.60, 869,989.86 and 343,968.36 is: 474,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,450.60 : 869,989.86 = 343,968.36 : x
  2. Step 2: Convert to fraction form
    630,450.60/869,989.86 = 343,968.36/x
  3. Step 3: Cross multiply
    630,450.60x = 869,989.86 × 343,968.36
  4. Step 4: Simplify right side
    630,450.60x = 299,248,985,360.83
  5. Step 5: Solve for x
    x = 299,248,985,360.83/630,450.60
  6. Step 6: Final answer
    x = 474,658.90

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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.