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Finding the Fourth Proportional to 780,129.30, 1,095,330.30 and 780,129.30

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Solution

The fourth proportional to 780,129.30, 1,095,330.30 and 780,129.30 is: 1,095,330.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,129.30 : 1,095,330.30 = 780,129.30 : x
  2. Step 2: Convert to fraction form
    780,129.30/1,095,330.30 = 780,129.30/x
  3. Step 3: Cross multiply
    780,129.30x = 1,095,330.30 × 780,129.30
  4. Step 4: Simplify right side
    780,129.30x = 854,499,260,207.79
  5. Step 5: Solve for x
    x = 854,499,260,207.79/780,129.30
  6. Step 6: Final answer
    x = 1,095,330.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.