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Finding the Fourth Proportional to 666,291, 919,503.53 and 364,485

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Solution

The fourth proportional to 666,291, 919,503.53 and 364,485 is: 503,001.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,291 : 919,503.53 = 364,485 : x
  2. Step 2: Convert to fraction form
    666,291/919,503.53 = 364,485/x
  3. Step 3: Cross multiply
    666,291x = 919,503.53 × 364,485
  4. Step 4: Simplify right side
    666,291x = 335,145,242,309.63
  5. Step 5: Solve for x
    x = 335,145,242,309.63/666,291
  6. Step 6: Final answer
    x = 503,001.30

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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.