Home / 1,858,818.51-2,788,361.03-778,243.68

Finding the Fourth Proportional to 1,858,818.51, 2,788,361.03 and 778,243.68

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Solution

The fourth proportional to 1,858,818.51, 2,788,361.03 and 778,243.68 is: 1,167,421.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858,818.51 : 2,788,361.03 = 778,243.68 : x
  2. Step 2: Convert to fraction form
    1,858,818.51/2,788,361.03 = 778,243.68/x
  3. Step 3: Cross multiply
    1,858,818.51x = 2,788,361.03 × 778,243.68
  4. Step 4: Simplify right side
    1,858,818.51x = 2,170,024,349,155.79
  5. Step 5: Solve for x
    x = 2,170,024,349,155.79/1,858,818.51
  6. Step 6: Final answer
    x = 1,167,421.31

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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.