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Finding the Fourth Proportional to 612,981.84, 919,463.52 and 275,784.40

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Solution

The fourth proportional to 612,981.84, 919,463.52 and 275,784.40 is: 413,672.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,981.84 : 919,463.52 = 275,784.40 : x
  2. Step 2: Convert to fraction form
    612,981.84/919,463.52 = 275,784.40/x
  3. Step 3: Cross multiply
    612,981.84x = 919,463.52 × 275,784.40
  4. Step 4: Simplify right side
    612,981.84x = 253,573,695,185.09
  5. Step 5: Solve for x
    x = 253,573,695,185.09/612,981.84
  6. Step 6: Final answer
    x = 413,672.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.