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Finding the Fourth Proportional to 578,636.70, 797,985.75 and 397,028.22

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Solution

The fourth proportional to 578,636.70, 797,985.75 and 397,028.22 is: 547,533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,636.70 : 797,985.75 = 397,028.22 : x
  2. Step 2: Convert to fraction form
    578,636.70/797,985.75 = 397,028.22/x
  3. Step 3: Cross multiply
    578,636.70x = 797,985.75 × 397,028.22
  4. Step 4: Simplify right side
    578,636.70x = 316,822,861,907.87
  5. Step 5: Solve for x
    x = 316,822,861,907.87/578,636.70
  6. Step 6: Final answer
    x = 547,533.30

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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.