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Finding the Fourth Proportional to 630,444.36, 870,010.32 and 343,963.56

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Solution

The fourth proportional to 630,444.36, 870,010.32 and 343,963.56 is: 474,668.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,444.36 : 870,010.32 = 343,963.56 : x
  2. Step 2: Convert to fraction form
    630,444.36/870,010.32 = 343,963.56/x
  3. Step 3: Cross multiply
    630,444.36x = 870,010.32 × 343,963.56
  4. Step 4: Simplify right side
    630,444.36x = 299,251,846,903.94
  5. Step 5: Solve for x
    x = 299,251,846,903.94/630,444.36
  6. Step 6: Final answer
    x = 474,668.13

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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.