Home / 1,121,472.75-1,547,667.42-638,107.48

Finding the Fourth Proportional to 1,121,472.75, 1,547,667.42 and 638,107.48

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Solution

The fourth proportional to 1,121,472.75, 1,547,667.42 and 638,107.48 is: 880,608.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,472.75 : 1,547,667.42 = 638,107.48 : x
  2. Step 2: Convert to fraction form
    1,121,472.75/1,547,667.42 = 638,107.48/x
  3. Step 3: Cross multiply
    1,121,472.75x = 1,547,667.42 × 638,107.48
  4. Step 4: Simplify right side
    1,121,472.75x = 987,578,157,254.30
  5. Step 5: Solve for x
    x = 987,578,157,254.30/1,121,472.75
  6. Step 6: Final answer
    x = 880,608.25

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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.