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Finding the Fourth Proportional to 658,699.95, 909,006.53 and 356,893.95

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Solution

The fourth proportional to 658,699.95, 909,006.53 and 356,893.95 is: 492,513.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,699.95 : 909,006.53 = 356,893.95 : x
  2. Step 2: Convert to fraction form
    658,699.95/909,006.53 = 356,893.95/x
  3. Step 3: Cross multiply
    658,699.95x = 909,006.53 × 356,893.95
  4. Step 4: Simplify right side
    658,699.95x = 324,418,931,067.49
  5. Step 5: Solve for x
    x = 324,418,931,067.49/658,699.95
  6. Step 6: Final answer
    x = 492,513.98

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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.