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Finding the Fourth Proportional to 543,397.68, 749,683.08 and 400,499.28

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Solution

The fourth proportional to 543,397.68, 749,683.08 and 400,499.28 is: 552,537.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,397.68 : 749,683.08 = 400,499.28 : x
  2. Step 2: Convert to fraction form
    543,397.68/749,683.08 = 400,499.28/x
  3. Step 3: Cross multiply
    543,397.68x = 749,683.08 × 400,499.28
  4. Step 4: Simplify right side
    543,397.68x = 300,247,533,768.18
  5. Step 5: Solve for x
    x = 300,247,533,768.18/543,397.68
  6. Step 6: Final answer
    x = 552,537.39

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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.