Home / 630,837.72-870,531.30-344,357.46

Finding the Fourth Proportional to 630,837.72, 870,531.30 and 344,357.46

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Solution

The fourth proportional to 630,837.72, 870,531.30 and 344,357.46 is: 475,199.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,837.72 : 870,531.30 = 344,357.46 : x
  2. Step 2: Convert to fraction form
    630,837.72/870,531.30 = 344,357.46/x
  3. Step 3: Cross multiply
    630,837.72x = 870,531.30 × 344,357.46
  4. Step 4: Simplify right side
    630,837.72x = 299,773,947,318.50
  5. Step 5: Solve for x
    x = 299,773,947,318.50/630,837.72
  6. Step 6: Final answer
    x = 475,199.78

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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.