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Finding the Fourth Proportional to 630,543.30, 870,170.76 and 344,079.11

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Solution

The fourth proportional to 630,543.30, 870,170.76 and 344,079.11 is: 474,840.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,543.30 : 870,170.76 = 344,079.11 : x
  2. Step 2: Convert to fraction form
    630,543.30/870,170.76 = 344,079.11/x
  3. Step 3: Cross multiply
    630,543.30x = 870,170.76 × 344,079.11
  4. Step 4: Simplify right side
    630,543.30x = 299,407,576,297.97
  5. Step 5: Solve for x
    x = 299,407,576,297.97/630,543.30
  6. Step 6: Final answer
    x = 474,840.63

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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.