Home / 1,431,839.10-1,975,900.04-778,444.50

Finding the Fourth Proportional to 1,431,839.10, 1,975,900.04 and 778,444.50

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Solution

The fourth proportional to 1,431,839.10, 1,975,900.04 and 778,444.50 is: 1,074,232.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,839.10 : 1,975,900.04 = 778,444.50 : x
  2. Step 2: Convert to fraction form
    1,431,839.10/1,975,900.04 = 778,444.50/x
  3. Step 3: Cross multiply
    1,431,839.10x = 1,975,900.04 × 778,444.50
  4. Step 4: Simplify right side
    1,431,839.10x = 1,538,128,518,687.78
  5. Step 5: Solve for x
    x = 1,538,128,518,687.78/1,431,839.10
  6. Step 6: Final answer
    x = 1,074,232.80

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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.