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Finding the Fourth Proportional to 648,087.76, 894,369 and 376,218.64

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Solution

The fourth proportional to 648,087.76, 894,369 and 376,218.64 is: 519,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,087.76 : 894,369 = 376,218.64 : x
  2. Step 2: Convert to fraction form
    648,087.76/894,369 = 376,218.64/x
  3. Step 3: Cross multiply
    648,087.76x = 894,369 × 376,218.64
  4. Step 4: Simplify right side
    648,087.76x = 336,478,288,838.16
  5. Step 5: Solve for x
    x = 336,478,288,838.16/648,087.76
  6. Step 6: Final answer
    x = 519,186.30

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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.