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Finding the Fourth Proportional to 518,330.96, 776,487.66 and 293,009.78

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Solution

The fourth proportional to 518,330.96, 776,487.66 and 293,009.78 is: 438,944.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,330.96 : 776,487.66 = 293,009.78 : x
  2. Step 2: Convert to fraction form
    518,330.96/776,487.66 = 293,009.78/x
  3. Step 3: Cross multiply
    518,330.96x = 776,487.66 × 293,009.78
  4. Step 4: Simplify right side
    518,330.96x = 227,518,478,429.32
  5. Step 5: Solve for x
    x = 227,518,478,429.32/518,330.96
  6. Step 6: Final answer
    x = 438,944.41

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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.