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Finding the Fourth Proportional to 666,704.24, 920,054.27 and 360,780.59

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Solution

The fourth proportional to 666,704.24, 920,054.27 and 360,780.59 is: 497,878.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,704.24 : 920,054.27 = 360,780.59 : x
  2. Step 2: Convert to fraction form
    666,704.24/920,054.27 = 360,780.59/x
  3. Step 3: Cross multiply
    666,704.24x = 920,054.27 × 360,780.59
  4. Step 4: Simplify right side
    666,704.24x = 331,937,725,564.71
  5. Step 5: Solve for x
    x = 331,937,725,564.71/666,704.24
  6. Step 6: Final answer
    x = 497,878.53

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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.