Home / 1,431,817.62-1,975,945.73-778,487.58

Finding the Fourth Proportional to 1,431,817.62, 1,975,945.73 and 778,487.58

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Solution

The fourth proportional to 1,431,817.62, 1,975,945.73 and 778,487.58 is: 1,074,333.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,817.62 : 1,975,945.73 = 778,487.58 : x
  2. Step 2: Convert to fraction form
    1,431,817.62/1,975,945.73 = 778,487.58/x
  3. Step 3: Cross multiply
    1,431,817.62x = 1,975,945.73 × 778,487.58
  4. Step 4: Simplify right side
    1,431,817.62x = 1,538,249,205,666.60
  5. Step 5: Solve for x
    x = 1,538,249,205,666.60/1,431,817.62
  6. Step 6: Final answer
    x = 1,074,333.20

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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.