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Finding the Fourth Proportional to 630,377.37, 869,903.55 and 343,897.38

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Solution

The fourth proportional to 630,377.37, 869,903.55 and 343,897.38 is: 474,568.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,377.37 : 869,903.55 = 343,897.38 : x
  2. Step 2: Convert to fraction form
    630,377.37/869,903.55 = 343,897.38/x
  3. Step 3: Cross multiply
    630,377.37x = 869,903.55 × 343,897.38
  4. Step 4: Simplify right side
    630,377.37x = 299,157,551,697.70
  5. Step 5: Solve for x
    x = 299,157,551,697.70/630,377.37
  6. Step 6: Final answer
    x = 474,568.99

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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.