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Finding the Fourth Proportional to 630,005.45, 869,425.45 and 343,541.25

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Solution

The fourth proportional to 630,005.45, 869,425.45 and 343,541.25 is: 474,096.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,005.45 : 869,425.45 = 343,541.25 : x
  2. Step 2: Convert to fraction form
    630,005.45/869,425.45 = 343,541.25/x
  3. Step 3: Cross multiply
    630,005.45x = 869,425.45 × 343,541.25
  4. Step 4: Simplify right side
    630,005.45x = 298,683,505,015.96
  5. Step 5: Solve for x
    x = 298,683,505,015.96/630,005.45
  6. Step 6: Final answer
    x = 474,096.70

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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.