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Finding the Fourth Proportional to 590,297.70, 886,430.70 and 391,499.40

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Solution

The fourth proportional to 590,297.70, 886,430.70 and 391,499.40 is: 587,901.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,297.70 : 886,430.70 = 391,499.40 : x
  2. Step 2: Convert to fraction form
    590,297.70/886,430.70 = 391,499.40/x
  3. Step 3: Cross multiply
    590,297.70x = 886,430.70 × 391,499.40
  4. Step 4: Simplify right side
    590,297.70x = 347,037,087,191.58
  5. Step 5: Solve for x
    x = 347,037,087,191.58/590,297.70
  6. Step 6: Final answer
    x = 587,901.81

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1.5x scale

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.