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Finding the Fourth Proportional to 645,777.93, 891,159.64 and 373,857.33

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Solution

The fourth proportional to 645,777.93, 891,159.64 and 373,857.33 is: 515,915.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,777.93 : 891,159.64 = 373,857.33 : x
  2. Step 2: Convert to fraction form
    645,777.93/891,159.64 = 373,857.33/x
  3. Step 3: Cross multiply
    645,777.93x = 891,159.64 × 373,857.33
  4. Step 4: Simplify right side
    645,777.93x = 333,166,563,614.16
  5. Step 5: Solve for x
    x = 333,166,563,614.16/645,777.93
  6. Step 6: Final answer
    x = 515,915.07

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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.