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Finding the Fourth Proportional to 666,704.59, 920,054.75 and 360,780.93

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Solution

The fourth proportional to 666,704.59, 920,054.75 and 360,780.93 is: 497,878.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,704.59 : 920,054.75 = 360,780.93 : x
  2. Step 2: Convert to fraction form
    666,704.59/920,054.75 = 360,780.93/x
  3. Step 3: Cross multiply
    666,704.59x = 920,054.75 × 360,780.93
  4. Step 4: Simplify right side
    666,704.59x = 331,938,208,355.92
  5. Step 5: Solve for x
    x = 331,938,208,355.92/666,704.59
  6. Step 6: Final answer
    x = 497,878.99

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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.