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Finding the Fourth Proportional to 604,706.34, 834,215.54 and 389,915.40

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Solution

The fourth proportional to 604,706.34, 834,215.54 and 389,915.40 is: 537,903.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,706.34 : 834,215.54 = 389,915.40 : x
  2. Step 2: Convert to fraction form
    604,706.34/834,215.54 = 389,915.40/x
  3. Step 3: Cross multiply
    604,706.34x = 834,215.54 × 389,915.40
  4. Step 4: Simplify right side
    604,706.34x = 325,273,485,965.32
  5. Step 5: Solve for x
    x = 325,273,485,965.32/604,706.34
  6. Step 6: Final answer
    x = 537,903.22

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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.