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Finding the Fourth Proportional to 642,762.20, 963,452.10 and 243,248.60

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Solution

The fourth proportional to 642,762.20, 963,452.10 and 243,248.60 is: 364,611.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,762.20 : 963,452.10 = 243,248.60 : x
  2. Step 2: Convert to fraction form
    642,762.20/963,452.10 = 243,248.60/x
  3. Step 3: Cross multiply
    642,762.20x = 963,452.10 × 243,248.60
  4. Step 4: Simplify right side
    642,762.20x = 234,358,374,492.06
  5. Step 5: Solve for x
    x = 234,358,374,492.06/642,762.20
  6. Step 6: Final answer
    x = 364,611.32

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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.