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Finding the Fourth Proportional to 666,886.17, 920,302.83 and 360,962.49

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Solution

The fourth proportional to 666,886.17, 920,302.83 and 360,962.49 is: 498,128.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,886.17 : 920,302.83 = 360,962.49 : x
  2. Step 2: Convert to fraction form
    666,886.17/920,302.83 = 360,962.49/x
  3. Step 3: Cross multiply
    666,886.17x = 920,302.83 × 360,962.49
  4. Step 4: Simplify right side
    666,886.17x = 332,194,801,070.85
  5. Step 5: Solve for x
    x = 332,194,801,070.85/666,886.17
  6. Step 6: Final answer
    x = 498,128.19

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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.