Home / 990,656.63-1,367,111.52-561,020.48

Finding the Fourth Proportional to 990,656.63, 1,367,111.52 and 561,020.48

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Solution

The fourth proportional to 990,656.63, 1,367,111.52 and 561,020.48 is: 774,211.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,656.63 : 1,367,111.52 = 561,020.48 : x
  2. Step 2: Convert to fraction form
    990,656.63/1,367,111.52 = 561,020.48/x
  3. Step 3: Cross multiply
    990,656.63x = 1,367,111.52 × 561,020.48
  4. Step 4: Simplify right side
    990,656.63x = 766,977,559,455.04
  5. Step 5: Solve for x
    x = 766,977,559,455.04/990,656.63
  6. Step 6: Final answer
    x = 774,211.30

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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.