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Finding the Fourth Proportional to 642,602.20, 963,247.20 and 376,225.60

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Solution

The fourth proportional to 642,602.20, 963,247.20 and 376,225.60 is: 563,954.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,602.20 : 963,247.20 = 376,225.60 : x
  2. Step 2: Convert to fraction form
    642,602.20/963,247.20 = 376,225.60/x
  3. Step 3: Cross multiply
    642,602.20x = 963,247.20 × 376,225.60
  4. Step 4: Simplify right side
    642,602.20x = 362,398,255,768.32
  5. Step 5: Solve for x
    x = 362,398,255,768.32/642,602.20
  6. Step 6: Final answer
    x = 563,954.27

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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.