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Finding the Fourth Proportional to 638,847.40, 958,271.10 and 587,237.80

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Solution

The fourth proportional to 638,847.40, 958,271.10 and 587,237.80 is: 880,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,847.40 : 958,271.10 = 587,237.80 : x
  2. Step 2: Convert to fraction form
    638,847.40/958,271.10 = 587,237.80/x
  3. Step 3: Cross multiply
    638,847.40x = 958,271.10 × 587,237.80
  4. Step 4: Simplify right side
    638,847.40x = 562,733,012,567.58
  5. Step 5: Solve for x
    x = 562,733,012,567.58/638,847.40
  6. Step 6: Final answer
    x = 880,856.70

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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.