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Finding the Fourth Proportional to 554,662.37, 765,368.24 and 312,930.83

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Solution

The fourth proportional to 554,662.37, 765,368.24 and 312,930.83 is: 431,807.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,662.37 : 765,368.24 = 312,930.83 : x
  2. Step 2: Convert to fraction form
    554,662.37/765,368.24 = 312,930.83/x
  3. Step 3: Cross multiply
    554,662.37x = 765,368.24 × 312,930.83
  4. Step 4: Simplify right side
    554,662.37x = 239,507,313,207.34
  5. Step 5: Solve for x
    x = 239,507,313,207.34/554,662.37
  6. Step 6: Final answer
    x = 431,807.40

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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.