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Finding the Fourth Proportional to 761,602.71, 1,050,993.86 and 422,063.67

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Solution

The fourth proportional to 761,602.71, 1,050,993.86 and 422,063.67 is: 582,437.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,602.71 : 1,050,993.86 = 422,063.67 : x
  2. Step 2: Convert to fraction form
    761,602.71/1,050,993.86 = 422,063.67/x
  3. Step 3: Cross multiply
    761,602.71x = 1,050,993.86 × 422,063.67
  4. Step 4: Simplify right side
    761,602.71x = 443,586,323,588.75
  5. Step 5: Solve for x
    x = 443,586,323,588.75/761,602.71
  6. Step 6: Final answer
    x = 582,437.95

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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.