Home / 759,492.80-1,139,239.20-310,064.30

Finding the Fourth Proportional to 759,492.80, 1,139,239.20 and 310,064.30

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Solution

The fourth proportional to 759,492.80, 1,139,239.20 and 310,064.30 is: 465,096.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,492.80 : 1,139,239.20 = 310,064.30 : x
  2. Step 2: Convert to fraction form
    759,492.80/1,139,239.20 = 310,064.30/x
  3. Step 3: Cross multiply
    759,492.80x = 1,139,239.20 × 310,064.30
  4. Step 4: Simplify right side
    759,492.80x = 353,237,405,080.56
  5. Step 5: Solve for x
    x = 353,237,405,080.56/759,492.80
  6. Step 6: Final answer
    x = 465,096.45

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Double scale
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Similar ratio
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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.