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Finding the Fourth Proportional to 518,010.39, 777,126.15 and 293,478.39

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Solution

The fourth proportional to 518,010.39, 777,126.15 and 293,478.39 is: 440,280.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,010.39 : 777,126.15 = 293,478.39 : x
  2. Step 2: Convert to fraction form
    518,010.39/777,126.15 = 293,478.39/x
  3. Step 3: Cross multiply
    518,010.39x = 777,126.15 × 293,478.39
  4. Step 4: Simplify right side
    518,010.39x = 228,069,731,328.90
  5. Step 5: Solve for x
    x = 228,069,731,328.90/518,010.39
  6. Step 6: Final answer
    x = 440,280.23

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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.