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Finding the Fourth Proportional to 666,878.63, 920,292.55 and 365,072.63

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Solution

The fourth proportional to 666,878.63, 920,292.55 and 365,072.63 is: 503,800.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,878.63 : 920,292.55 = 365,072.63 : x
  2. Step 2: Convert to fraction form
    666,878.63/920,292.55 = 365,072.63/x
  3. Step 3: Cross multiply
    666,878.63x = 920,292.55 × 365,072.63
  4. Step 4: Simplify right side
    666,878.63x = 335,973,616,083.76
  5. Step 5: Solve for x
    x = 335,973,616,083.76/666,878.63
  6. Step 6: Final answer
    x = 503,800.25

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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.