Home / 918,071.40-1,375,704.08-385,301.80

Finding the Fourth Proportional to 918,071.40, 1,375,704.08 and 385,301.80

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Solution

The fourth proportional to 918,071.40, 1,375,704.08 and 385,301.80 is: 577,363.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,071.40 : 1,375,704.08 = 385,301.80 : x
  2. Step 2: Convert to fraction form
    918,071.40/1,375,704.08 = 385,301.80/x
  3. Step 3: Cross multiply
    918,071.40x = 1,375,704.08 × 385,301.80
  4. Step 4: Simplify right side
    918,071.40x = 530,061,258,291.34
  5. Step 5: Solve for x
    x = 530,061,258,291.34/918,071.40
  6. Step 6: Final answer
    x = 577,363.87

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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.