Home / 1,280,439.09-1,767,002.31-707,475.18

Finding the Fourth Proportional to 1,280,439.09, 1,767,002.31 and 707,475.18

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Solution

The fourth proportional to 1,280,439.09, 1,767,002.31 and 707,475.18 is: 976,313.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,439.09 : 1,767,002.31 = 707,475.18 : x
  2. Step 2: Convert to fraction form
    1,280,439.09/1,767,002.31 = 707,475.18/x
  3. Step 3: Cross multiply
    1,280,439.09x = 1,767,002.31 × 707,475.18
  4. Step 4: Simplify right side
    1,280,439.09x = 1,250,110,277,327.67
  5. Step 5: Solve for x
    x = 1,250,110,277,327.67/1,280,439.09
  6. Step 6: Final answer
    x = 976,313.74

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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.