Home / 780,038.30-1,170,057.45-306,739.10

Finding the Fourth Proportional to 780,038.30, 1,170,057.45 and 306,739.10

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Solution

The fourth proportional to 780,038.30, 1,170,057.45 and 306,739.10 is: 460,108.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,038.30 : 1,170,057.45 = 306,739.10 : x
  2. Step 2: Convert to fraction form
    780,038.30/1,170,057.45 = 306,739.10/x
  3. Step 3: Cross multiply
    780,038.30x = 1,170,057.45 × 306,739.10
  4. Step 4: Simplify right side
    780,038.30x = 358,902,369,161.30
  5. Step 5: Solve for x
    x = 358,902,369,161.30/780,038.30
  6. Step 6: Final answer
    x = 460,108.65

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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.