Home / 1,121,504.74-1,547,656.56-638,059.48

Finding the Fourth Proportional to 1,121,504.74, 1,547,656.56 and 638,059.48

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Solution

The fourth proportional to 1,121,504.74, 1,547,656.56 and 638,059.48 is: 880,510.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,504.74 : 1,547,656.56 = 638,059.48 : x
  2. Step 2: Convert to fraction form
    1,121,504.74/1,547,656.56 = 638,059.48/x
  3. Step 3: Cross multiply
    1,121,504.74x = 1,547,656.56 × 638,059.48
  4. Step 4: Simplify right side
    1,121,504.74x = 987,496,939,892.19
  5. Step 5: Solve for x
    x = 987,496,939,892.19/1,121,504.74
  6. Step 6: Final answer
    x = 880,510.71

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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.