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Finding the Fourth Proportional to 545,777.20, 817,888.20 and 402,504.40

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Solution

The fourth proportional to 545,777.20, 817,888.20 and 402,504.40 is: 603,183.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,777.20 : 817,888.20 = 402,504.40 : x
  2. Step 2: Convert to fraction form
    545,777.20/817,888.20 = 402,504.40/x
  3. Step 3: Cross multiply
    545,777.20x = 817,888.20 × 402,504.40
  4. Step 4: Simplify right side
    545,777.20x = 329,203,599,208.08
  5. Step 5: Solve for x
    x = 329,203,599,208.08/545,777.20
  6. Step 6: Final answer
    x = 603,183.13

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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.