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Finding the Fourth Proportional to 554,557.39, 765,324.64 and 312,751.74

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Solution

The fourth proportional to 554,557.39, 765,324.64 and 312,751.74 is: 431,617.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,557.39 : 765,324.64 = 312,751.74 : x
  2. Step 2: Convert to fraction form
    554,557.39/765,324.64 = 312,751.74/x
  3. Step 3: Cross multiply
    554,557.39x = 765,324.64 × 312,751.74
  4. Step 4: Simplify right side
    554,557.39x = 239,356,609,173.03
  5. Step 5: Solve for x
    x = 239,356,609,173.03/554,557.39
  6. Step 6: Final answer
    x = 431,617.38

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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.