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Finding the Fourth Proportional to 440,446.90, 607,913.49 and 289,557.94

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Solution

The fourth proportional to 440,446.90, 607,913.49 and 289,557.94 is: 399,653.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,446.90 : 607,913.49 = 289,557.94 : x
  2. Step 2: Convert to fraction form
    440,446.90/607,913.49 = 289,557.94/x
  3. Step 3: Cross multiply
    440,446.90x = 607,913.49 × 289,557.94
  4. Step 4: Simplify right side
    440,446.90x = 176,026,177,862.61
  5. Step 5: Solve for x
    x = 176,026,177,862.61/440,446.90
  6. Step 6: Final answer
    x = 399,653.57

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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.