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Finding the Fourth Proportional to 630,911.58, 870,671.13 and 344,443.74

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Solution

The fourth proportional to 630,911.58, 870,671.13 and 344,443.74 is: 475,339.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,911.58 : 870,671.13 = 344,443.74 : x
  2. Step 2: Convert to fraction form
    630,911.58/870,671.13 = 344,443.74/x
  3. Step 3: Cross multiply
    630,911.58x = 870,671.13 × 344,443.74
  4. Step 4: Simplify right side
    630,911.58x = 299,897,220,327.23
  5. Step 5: Solve for x
    x = 299,897,220,327.23/630,911.58
  6. Step 6: Final answer
    x = 475,339.54

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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.