Home / 1,121,540.40-1,547,518.59-638,077.32

Finding the Fourth Proportional to 1,121,540.40, 1,547,518.59 and 638,077.32

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Solution

The fourth proportional to 1,121,540.40, 1,547,518.59 and 638,077.32 is: 880,428.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,540.40 : 1,547,518.59 = 638,077.32 : x
  2. Step 2: Convert to fraction form
    1,121,540.40/1,547,518.59 = 638,077.32/x
  3. Step 3: Cross multiply
    1,121,540.40x = 1,547,518.59 × 638,077.32
  4. Step 4: Simplify right side
    1,121,540.40x = 987,436,514,557.38
  5. Step 5: Solve for x
    x = 987,436,514,557.38/1,121,540.40
  6. Step 6: Final answer
    x = 880,428.84

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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.