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Finding the Fourth Proportional to 502,059.77, 692,669.28 and 320,877.75

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Solution

The fourth proportional to 502,059.77, 692,669.28 and 320,877.75 is: 442,700.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,059.77 : 692,669.28 = 320,877.75 : x
  2. Step 2: Convert to fraction form
    502,059.77/692,669.28 = 320,877.75/x
  3. Step 3: Cross multiply
    502,059.77x = 692,669.28 × 320,877.75
  4. Step 4: Simplify right side
    502,059.77x = 222,262,160,060.52
  5. Step 5: Solve for x
    x = 222,262,160,060.52/502,059.77
  6. Step 6: Final answer
    x = 442,700.60

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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.