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Finding the Fourth Proportional to 630,388.26, 869,937.84 and 343,914.36

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Solution

The fourth proportional to 630,388.26, 869,937.84 and 343,914.36 is: 474,602.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,388.26 : 869,937.84 = 343,914.36 : x
  2. Step 2: Convert to fraction form
    630,388.26/869,937.84 = 343,914.36/x
  3. Step 3: Cross multiply
    630,388.26x = 869,937.84 × 343,914.36
  4. Step 4: Simplify right side
    630,388.26x = 299,184,115,483.38
  5. Step 5: Solve for x
    x = 299,184,115,483.38/630,388.26
  6. Step 6: Final answer
    x = 474,602.93

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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.