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Finding the Fourth Proportional to 670,575, 925,337.34 and 394,888.98

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Solution

The fourth proportional to 670,575, 925,337.34 and 394,888.98 is: 544,913.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,575 : 925,337.34 = 394,888.98 : x
  2. Step 2: Convert to fraction form
    670,575/925,337.34 = 394,888.98/x
  3. Step 3: Cross multiply
    670,575x = 925,337.34 × 394,888.98
  4. Step 4: Simplify right side
    670,575x = 365,405,518,348.51
  5. Step 5: Solve for x
    x = 365,405,518,348.51/670,575
  6. Step 6: Final answer
    x = 544,913.72

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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.