Home / 1,121,515.09-1,547,670.90-638,069.83

Finding the Fourth Proportional to 1,121,515.09, 1,547,670.90 and 638,069.83

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Solution

The fourth proportional to 1,121,515.09, 1,547,670.90 and 638,069.83 is: 880,525.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,515.09 : 1,547,670.90 = 638,069.83 : x
  2. Step 2: Convert to fraction form
    1,121,515.09/1,547,670.90 = 638,069.83/x
  3. Step 3: Cross multiply
    1,121,515.09x = 1,547,670.90 × 638,069.83
  4. Step 4: Simplify right side
    1,121,515.09x = 987,522,108,058.95
  5. Step 5: Solve for x
    x = 987,522,108,058.95/1,121,515.09
  6. Step 6: Final answer
    x = 880,525.03

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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.