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Finding the Fourth Proportional to 930,216.80, 1,392,214.80 and 650,280.80

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Solution

The fourth proportional to 930,216.80, 1,392,214.80 and 650,280.80 is: 973,246.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,216.80 : 1,392,214.80 = 650,280.80 : x
  2. Step 2: Convert to fraction form
    930,216.80/1,392,214.80 = 650,280.80/x
  3. Step 3: Cross multiply
    930,216.80x = 1,392,214.80 × 650,280.80
  4. Step 4: Simplify right side
    930,216.80x = 905,330,553,915.84
  5. Step 5: Solve for x
    x = 905,330,553,915.84/930,216.80
  6. Step 6: Final answer
    x = 973,246.83

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Double scale
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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.