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Finding the Fourth Proportional to 525,015.27, 724,305.54 and 389,383.00

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Solution

The fourth proportional to 525,015.27, 724,305.54 and 389,383.00 is: 537,188.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,015.27 : 724,305.54 = 389,383.00 : x
  2. Step 2: Convert to fraction form
    525,015.27/724,305.54 = 389,383.00/x
  3. Step 3: Cross multiply
    525,015.27x = 724,305.54 × 389,383.00
  4. Step 4: Simplify right side
    525,015.27x = 282,032,263,731.24
  5. Step 5: Solve for x
    x = 282,032,263,731.24/525,015.27
  6. Step 6: Final answer
    x = 537,188.69

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1.5x scale

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.