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Finding the Fourth Proportional to 525,422.84, 724,803.32 and 321,572.56

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Solution

The fourth proportional to 525,422.84, 724,803.32 and 321,572.56 is: 443,598.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,422.84 : 724,803.32 = 321,572.56 : x
  2. Step 2: Convert to fraction form
    525,422.84/724,803.32 = 321,572.56/x
  3. Step 3: Cross multiply
    525,422.84x = 724,803.32 × 321,572.56
  4. Step 4: Simplify right side
    525,422.84x = 233,076,859,108.90
  5. Step 5: Solve for x
    x = 233,076,859,108.90/525,422.84
  6. Step 6: Final answer
    x = 443,598.64

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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.