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Finding the Fourth Proportional to 662,518.71, 993,568.86 and 213,139.44

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Solution

The fourth proportional to 662,518.71, 993,568.86 and 213,139.44 is: 319,641.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,518.71 : 993,568.86 = 213,139.44 : x
  2. Step 2: Convert to fraction form
    662,518.71/993,568.86 = 213,139.44/x
  3. Step 3: Cross multiply
    662,518.71x = 993,568.86 × 213,139.44
  4. Step 4: Simplify right side
    662,518.71x = 211,768,710,421.84
  5. Step 5: Solve for x
    x = 211,768,710,421.84/662,518.71
  6. Step 6: Final answer
    x = 319,641.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.