Home / 1,431,639.32-1,975,675.10-778,266.58

Finding the Fourth Proportional to 1,431,639.32, 1,975,675.10 and 778,266.58

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Solution

The fourth proportional to 1,431,639.32, 1,975,675.10 and 778,266.58 is: 1,074,014.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,639.32 : 1,975,675.10 = 778,266.58 : x
  2. Step 2: Convert to fraction form
    1,431,639.32/1,975,675.10 = 778,266.58/x
  3. Step 3: Cross multiply
    1,431,639.32x = 1,975,675.10 × 778,266.58
  4. Step 4: Simplify right side
    1,431,639.32x = 1,537,601,893,389.78
  5. Step 5: Solve for x
    x = 1,537,601,893,389.78/1,431,639.32
  6. Step 6: Final answer
    x = 1,074,014.86

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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.