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Finding the Fourth Proportional to 559,556.39, 839,542.40 and 388,688.06

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Solution

The fourth proportional to 559,556.39, 839,542.40 and 388,688.06 is: 583,176.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,556.39 : 839,542.40 = 388,688.06 : x
  2. Step 2: Convert to fraction form
    559,556.39/839,542.40 = 388,688.06/x
  3. Step 3: Cross multiply
    559,556.39x = 839,542.40 × 388,688.06
  4. Step 4: Simplify right side
    559,556.39x = 326,320,106,899.16
  5. Step 5: Solve for x
    x = 326,320,106,899.16/559,556.39
  6. Step 6: Final answer
    x = 583,176.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.