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Finding the Fourth Proportional to 665,898.71, 918,943.76 and 364,092.71

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Solution

The fourth proportional to 665,898.71, 918,943.76 and 364,092.71 is: 502,449.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,898.71 : 918,943.76 = 364,092.71 : x
  2. Step 2: Convert to fraction form
    665,898.71/918,943.76 = 364,092.71/x
  3. Step 3: Cross multiply
    665,898.71x = 918,943.76 × 364,092.71
  4. Step 4: Simplify right side
    665,898.71x = 334,580,721,163.51
  5. Step 5: Solve for x
    x = 334,580,721,163.51/665,898.71
  6. Step 6: Final answer
    x = 502,449.87

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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.