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Finding the Fourth Proportional to 642,915.02, 887,232.94 and 352,553.01

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Solution

The fourth proportional to 642,915.02, 887,232.94 and 352,553.01 is: 486,528.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,915.02 : 887,232.94 = 352,553.01 : x
  2. Step 2: Convert to fraction form
    642,915.02/887,232.94 = 352,553.01/x
  3. Step 3: Cross multiply
    642,915.02x = 887,232.94 × 352,553.01
  4. Step 4: Simplify right side
    642,915.02x = 312,796,642,686.77
  5. Step 5: Solve for x
    x = 312,796,642,686.77/642,915.02
  6. Step 6: Final answer
    x = 486,528.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.