Home / 739,221.40-1,108,832.10-318,971.80

Finding the Fourth Proportional to 739,221.40, 1,108,832.10 and 318,971.80

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Solution

The fourth proportional to 739,221.40, 1,108,832.10 and 318,971.80 is: 478,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,221.40 : 1,108,832.10 = 318,971.80 : x
  2. Step 2: Convert to fraction form
    739,221.40/1,108,832.10 = 318,971.80/x
  3. Step 3: Cross multiply
    739,221.40x = 1,108,832.10 × 318,971.80
  4. Step 4: Simplify right side
    739,221.40x = 353,686,170,834.78
  5. Step 5: Solve for x
    x = 353,686,170,834.78/739,221.40
  6. Step 6: Final answer
    x = 478,457.70

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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.