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Finding the Fourth Proportional to 634,081.70, 875,012.40 and 347,595.63

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Solution

The fourth proportional to 634,081.70, 875,012.40 and 347,595.63 is: 479,670.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,081.70 : 875,012.40 = 347,595.63 : x
  2. Step 2: Convert to fraction form
    634,081.70/875,012.40 = 347,595.63/x
  3. Step 3: Cross multiply
    634,081.70x = 875,012.40 × 347,595.63
  4. Step 4: Simplify right side
    634,081.70x = 304,150,486,435.81
  5. Step 5: Solve for x
    x = 304,150,486,435.81/634,081.70
  6. Step 6: Final answer
    x = 479,670.82

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Double scale
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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.