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Finding the Fourth Proportional to 706,611.70, 1,058,362.35 and 425,638.90

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Solution

The fourth proportional to 706,611.70, 1,058,362.35 and 425,638.90 is: 637,521.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,611.70 : 1,058,362.35 = 425,638.90 : x
  2. Step 2: Convert to fraction form
    706,611.70/1,058,362.35 = 425,638.90/x
  3. Step 3: Cross multiply
    706,611.70x = 1,058,362.35 × 425,638.90
  4. Step 4: Simplify right side
    706,611.70x = 450,480,186,455.42
  5. Step 5: Solve for x
    x = 450,480,186,455.42/706,611.70
  6. Step 6: Final answer
    x = 637,521.55

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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.