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Finding the Fourth Proportional to 553,859.10, 830,195.37 and 395,607.42

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Solution

The fourth proportional to 553,859.10, 830,195.37 and 395,607.42 is: 592,987.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,859.10 : 830,195.37 = 395,607.42 : x
  2. Step 2: Convert to fraction form
    553,859.10/830,195.37 = 395,607.42/x
  3. Step 3: Cross multiply
    553,859.10x = 830,195.37 × 395,607.42
  4. Step 4: Simplify right side
    553,859.10x = 328,431,448,421.65
  5. Step 5: Solve for x
    x = 328,431,448,421.65/553,859.10
  6. Step 6: Final answer
    x = 592,987.37

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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.