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Finding the Fourth Proportional to 648,622.80, 972,934.20 and 249,276.60

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Solution

The fourth proportional to 648,622.80, 972,934.20 and 249,276.60 is: 373,914.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,622.80 : 972,934.20 = 249,276.60 : x
  2. Step 2: Convert to fraction form
    648,622.80/972,934.20 = 249,276.60/x
  3. Step 3: Cross multiply
    648,622.80x = 972,934.20 × 249,276.60
  4. Step 4: Simplify right side
    648,622.80x = 242,529,729,399.72
  5. Step 5: Solve for x
    x = 242,529,729,399.72/648,622.80
  6. Step 6: Final answer
    x = 373,914.90

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Double scale
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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.