Home / 1,393,009.40-2,089,168.04-786,064.16

Finding the Fourth Proportional to 1,393,009.40, 2,089,168.04 and 786,064.16

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Solution

The fourth proportional to 1,393,009.40, 2,089,168.04 and 786,064.16 is: 1,178,900.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,009.40 : 2,089,168.04 = 786,064.16 : x
  2. Step 2: Convert to fraction form
    1,393,009.40/2,089,168.04 = 786,064.16/x
  3. Step 3: Cross multiply
    1,393,009.40x = 2,089,168.04 × 786,064.16
  4. Step 4: Simplify right side
    1,393,009.40x = 1,642,220,111,980.77
  5. Step 5: Solve for x
    x = 1,642,220,111,980.77/1,393,009.40
  6. Step 6: Final answer
    x = 1,178,900.96

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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.