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Finding the Fourth Proportional to 578,051.30, 869,150.55 and 486,812.90

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Solution

The fourth proportional to 578,051.30, 869,150.55 and 486,812.90 is: 731,965.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,051.30 : 869,150.55 = 486,812.90 : x
  2. Step 2: Convert to fraction form
    578,051.30/869,150.55 = 486,812.90/x
  3. Step 3: Cross multiply
    578,051.30x = 869,150.55 × 486,812.90
  4. Step 4: Simplify right side
    578,051.30x = 423,113,699,782.10
  5. Step 5: Solve for x
    x = 423,113,699,782.10/578,051.30
  6. Step 6: Final answer
    x = 731,965.66

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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.