Home / 1,431,812.36-1,975,938.48-778,482.33

Finding the Fourth Proportional to 1,431,812.36, 1,975,938.48 and 778,482.33

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Solution

The fourth proportional to 1,431,812.36, 1,975,938.48 and 778,482.33 is: 1,074,325.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,812.36 : 1,975,938.48 = 778,482.33 : x
  2. Step 2: Convert to fraction form
    1,431,812.36/1,975,938.48 = 778,482.33/x
  3. Step 3: Cross multiply
    1,431,812.36x = 1,975,938.48 × 778,482.33
  4. Step 4: Simplify right side
    1,431,812.36x = 1,538,233,191,847.06
  5. Step 5: Solve for x
    x = 1,538,233,191,847.06/1,431,812.36
  6. Step 6: Final answer
    x = 1,074,325.97

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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.