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Finding the Fourth Proportional to 617,628.40, 926,442.60 and 243,602.80

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Solution

The fourth proportional to 617,628.40, 926,442.60 and 243,602.80 is: 365,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,628.40 : 926,442.60 = 243,602.80 : x
  2. Step 2: Convert to fraction form
    617,628.40/926,442.60 = 243,602.80/x
  3. Step 3: Cross multiply
    617,628.40x = 926,442.60 × 243,602.80
  4. Step 4: Simplify right side
    617,628.40x = 225,684,011,399.28
  5. Step 5: Solve for x
    x = 225,684,011,399.28/617,628.40
  6. Step 6: Final answer
    x = 365,404.20

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Similar ratio
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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.