Home / 918,997.61-1,378,497.02-287,960.63

Finding the Fourth Proportional to 918,997.61, 1,378,497.02 and 287,960.63

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Solution

The fourth proportional to 918,997.61, 1,378,497.02 and 287,960.63 is: 431,941.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,997.61 : 1,378,497.02 = 287,960.63 : x
  2. Step 2: Convert to fraction form
    918,997.61/1,378,497.02 = 287,960.63/x
  3. Step 3: Cross multiply
    918,997.61x = 1,378,497.02 × 287,960.63
  4. Step 4: Simplify right side
    918,997.61x = 396,952,862,000.03
  5. Step 5: Solve for x
    x = 396,952,862,000.03/918,997.61
  6. Step 6: Final answer
    x = 431,941.13

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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.