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Finding the Fourth Proportional to 666,552.84, 919,820.17 and 380,165.19

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Solution

The fourth proportional to 666,552.84, 919,820.17 and 380,165.19 is: 524,614.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,552.84 : 919,820.17 = 380,165.19 : x
  2. Step 2: Convert to fraction form
    666,552.84/919,820.17 = 380,165.19/x
  3. Step 3: Cross multiply
    666,552.84x = 919,820.17 × 380,165.19
  4. Step 4: Simplify right side
    666,552.84x = 349,683,609,693.88
  5. Step 5: Solve for x
    x = 349,683,609,693.88/666,552.84
  6. Step 6: Final answer
    x = 524,614.99

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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.