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Finding the Fourth Proportional to 630,911.80, 870,671.46 and 344,443.96

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Solution

The fourth proportional to 630,911.80, 870,671.46 and 344,443.96 is: 475,339.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,911.80 : 870,671.46 = 344,443.96 : x
  2. Step 2: Convert to fraction form
    630,911.80/870,671.46 = 344,443.96/x
  3. Step 3: Cross multiply
    630,911.80x = 870,671.46 × 344,443.96
  4. Step 4: Simplify right side
    630,911.80x = 299,897,525,541.38
  5. Step 5: Solve for x
    x = 299,897,525,541.38/630,911.80
  6. Step 6: Final answer
    x = 475,339.86

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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.