Home / 1,431,836.10-1,975,895.91-778,441.50

Finding the Fourth Proportional to 1,431,836.10, 1,975,895.91 and 778,441.50

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Solution

The fourth proportional to 1,431,836.10, 1,975,895.91 and 778,441.50 is: 1,074,228.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,836.10 : 1,975,895.91 = 778,441.50 : x
  2. Step 2: Convert to fraction form
    1,431,836.10/1,975,895.91 = 778,441.50/x
  3. Step 3: Cross multiply
    1,431,836.10x = 1,975,895.91 × 778,441.50
  4. Step 4: Simplify right side
    1,431,836.10x = 1,538,119,376,024.27
  5. Step 5: Solve for x
    x = 1,538,119,376,024.27/1,431,836.10
  6. Step 6: Final answer
    x = 1,074,228.66

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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.