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Finding the Fourth Proportional to 525,210.94, 724,576.48 and 387,718.98

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Solution

The fourth proportional to 525,210.94, 724,576.48 and 387,718.98 is: 534,893.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,210.94 : 724,576.48 = 387,718.98 : x
  2. Step 2: Convert to fraction form
    525,210.94/724,576.48 = 387,718.98/x
  3. Step 3: Cross multiply
    525,210.94x = 724,576.48 × 387,718.98
  4. Step 4: Simplify right side
    525,210.94x = 280,932,053,757.59
  5. Step 5: Solve for x
    x = 280,932,053,757.59/525,210.94
  6. Step 6: Final answer
    x = 534,893.76

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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.