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Finding the Fourth Proportional to 780,036, 1,170,054.06 and 189,060

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Solution

The fourth proportional to 780,036, 1,170,054.06 and 189,060 is: 283,590.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,036 : 1,170,054.06 = 189,060 : x
  2. Step 2: Convert to fraction form
    780,036/1,170,054.06 = 189,060/x
  3. Step 3: Cross multiply
    780,036x = 1,170,054.06 × 189,060
  4. Step 4: Simplify right side
    780,036x = 221,210,420,583.60
  5. Step 5: Solve for x
    x = 221,210,420,583.60/780,036
  6. Step 6: Final answer
    x = 283,590.01

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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.