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Finding the Fourth Proportional to 611,925.40, 843,776.05 and 418,364.51

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Solution

The fourth proportional to 611,925.40, 843,776.05 and 418,364.51 is: 576,877.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,925.40 : 843,776.05 = 418,364.51 : x
  2. Step 2: Convert to fraction form
    611,925.40/843,776.05 = 418,364.51/x
  3. Step 3: Cross multiply
    611,925.40x = 843,776.05 × 418,364.51
  4. Step 4: Simplify right side
    611,925.40x = 353,005,954,771.51
  5. Step 5: Solve for x
    x = 353,005,954,771.51/611,925.40
  6. Step 6: Final answer
    x = 576,877.44

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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.