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Finding the Fourth Proportional to 554,747.39, 765,543.96 and 309,735.91

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Solution

The fourth proportional to 554,747.39, 765,543.96 and 309,735.91 is: 427,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,747.39 : 765,543.96 = 309,735.91 : x
  2. Step 2: Convert to fraction form
    554,747.39/765,543.96 = 309,735.91/x
  3. Step 3: Cross multiply
    554,747.39x = 765,543.96 × 309,735.91
  4. Step 4: Simplify right side
    554,747.39x = 237,116,455,095.60
  5. Step 5: Solve for x
    x = 237,116,455,095.60/554,747.39
  6. Step 6: Final answer
    x = 427,431.40

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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.