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Finding the Fourth Proportional to 630,440.96, 870,000.24 and 343,954.88

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Solution

The fourth proportional to 630,440.96, 870,000.24 and 343,954.88 is: 474,653.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,440.96 : 870,000.24 = 343,954.88 : x
  2. Step 2: Convert to fraction form
    630,440.96/870,000.24 = 343,954.88/x
  3. Step 3: Cross multiply
    630,440.96x = 870,000.24 × 343,954.88
  4. Step 4: Simplify right side
    630,440.96x = 299,240,828,149.17
  5. Step 5: Solve for x
    x = 299,240,828,149.17/630,440.96
  6. Step 6: Final answer
    x = 474,653.21

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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.