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Finding the Fourth Proportional to 604,706.64, 834,322.02 and 389,970

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Solution

The fourth proportional to 604,706.64, 834,322.02 and 389,970 is: 538,046.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,706.64 : 834,322.02 = 389,970 : x
  2. Step 2: Convert to fraction form
    604,706.64/834,322.02 = 389,970/x
  3. Step 3: Cross multiply
    604,706.64x = 834,322.02 × 389,970
  4. Step 4: Simplify right side
    604,706.64x = 325,360,558,139.40
  5. Step 5: Solve for x
    x = 325,360,558,139.40/604,706.64
  6. Step 6: Final answer
    x = 538,046.94

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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.