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Finding the Fourth Proportional to 679,718.70, 938,035.86 and 373,818.36

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Solution

The fourth proportional to 679,718.70, 938,035.86 and 373,818.36 is: 515,882.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,718.70 : 938,035.86 = 373,818.36 : x
  2. Step 2: Convert to fraction form
    679,718.70/938,035.86 = 373,818.36/x
  3. Step 3: Cross multiply
    679,718.70x = 938,035.86 × 373,818.36
  4. Step 4: Simplify right side
    679,718.70x = 350,655,026,806.39
  5. Step 5: Solve for x
    x = 350,655,026,806.39/679,718.70
  6. Step 6: Final answer
    x = 515,882.57

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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.