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Finding the Fourth Proportional to 986,061.68, 1,360,737.42 and 556,381.80

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Solution

The fourth proportional to 986,061.68, 1,360,737.42 and 556,381.80 is: 767,791.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,061.68 : 1,360,737.42 = 556,381.80 : x
  2. Step 2: Convert to fraction form
    986,061.68/1,360,737.42 = 556,381.80/x
  3. Step 3: Cross multiply
    986,061.68x = 1,360,737.42 × 556,381.80
  4. Step 4: Simplify right side
    986,061.68x = 757,089,535,066.96
  5. Step 5: Solve for x
    x = 757,089,535,066.96/986,061.68
  6. Step 6: Final answer
    x = 767,791.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.