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Finding the Fourth Proportional to 403,843.20, 605,764.80 and 373,430.40

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Solution

The fourth proportional to 403,843.20, 605,764.80 and 373,430.40 is: 560,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,843.20 : 605,764.80 = 373,430.40 : x
  2. Step 2: Convert to fraction form
    403,843.20/605,764.80 = 373,430.40/x
  3. Step 3: Cross multiply
    403,843.20x = 605,764.80 × 373,430.40
  4. Step 4: Simplify right side
    403,843.20x = 226,210,991,569.92
  5. Step 5: Solve for x
    x = 226,210,991,569.92/403,843.20
  6. Step 6: Final answer
    x = 560,145.60

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1.5x scale

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.