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Finding the Fourth Proportional to 560,709.84, 840,203.76 and 380,561.28

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Solution

The fourth proportional to 560,709.84, 840,203.76 and 380,561.28 is: 570,257.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,709.84 : 840,203.76 = 380,561.28 : x
  2. Step 2: Convert to fraction form
    560,709.84/840,203.76 = 380,561.28/x
  3. Step 3: Cross multiply
    560,709.84x = 840,203.76 × 380,561.28
  4. Step 4: Simplify right side
    560,709.84x = 319,749,018,366.41
  5. Step 5: Solve for x
    x = 319,749,018,366.41/560,709.84
  6. Step 6: Final answer
    x = 570,257.55

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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.