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Finding the Fourth Proportional to 554,419.08, 765,094.61 and 312,703.64

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Solution

The fourth proportional to 554,419.08, 765,094.61 and 312,703.64 is: 431,528.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,419.08 : 765,094.61 = 312,703.64 : x
  2. Step 2: Convert to fraction form
    554,419.08/765,094.61 = 312,703.64/x
  3. Step 3: Cross multiply
    554,419.08x = 765,094.61 × 312,703.64
  4. Step 4: Simplify right side
    554,419.08x = 239,247,869,316.77
  5. Step 5: Solve for x
    x = 239,247,869,316.77/554,419.08
  6. Step 6: Final answer
    x = 431,528.92

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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.