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Finding the Fourth Proportional to 518,328.96, 776,484.68 and 293,007.80

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Solution

The fourth proportional to 518,328.96, 776,484.68 and 293,007.80 is: 438,941.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,328.96 : 776,484.68 = 293,007.80 : x
  2. Step 2: Convert to fraction form
    518,328.96/776,484.68 = 293,007.80/x
  3. Step 3: Cross multiply
    518,328.96x = 776,484.68 × 293,007.80
  4. Step 4: Simplify right side
    518,328.96x = 227,516,067,820.50
  5. Step 5: Solve for x
    x = 227,516,067,820.50/518,328.96
  6. Step 6: Final answer
    x = 438,941.45

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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.