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Finding the Fourth Proportional to 510,794.81, 704,980.91 and 389,707.30

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Solution

The fourth proportional to 510,794.81, 704,980.91 and 389,707.30 is: 537,860.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,794.81 : 704,980.91 = 389,707.30 : x
  2. Step 2: Convert to fraction form
    510,794.81/704,980.91 = 389,707.30/x
  3. Step 3: Cross multiply
    510,794.81x = 704,980.91 × 389,707.30
  4. Step 4: Simplify right side
    510,794.81x = 274,736,206,987.64
  5. Step 5: Solve for x
    x = 274,736,206,987.64/510,794.81
  6. Step 6: Final answer
    x = 537,860.22

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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.