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Finding the Fourth Proportional to 674,403.61, 930,665.89 and 368,473.39

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Solution

The fourth proportional to 674,403.61, 930,665.89 and 368,473.39 is: 508,487.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,403.61 : 930,665.89 = 368,473.39 : x
  2. Step 2: Convert to fraction form
    674,403.61/930,665.89 = 368,473.39/x
  3. Step 3: Cross multiply
    674,403.61x = 930,665.89 × 368,473.39
  4. Step 4: Simplify right side
    674,403.61x = 342,925,615,445.67
  5. Step 5: Solve for x
    x = 342,925,615,445.67/674,403.61
  6. Step 6: Final answer
    x = 508,487.22

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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.