Home / 1,680,945.72-2,319,701.96-916,999.22

Finding the Fourth Proportional to 1,680,945.72, 2,319,701.96 and 916,999.22

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Solution

The fourth proportional to 1,680,945.72, 2,319,701.96 and 916,999.22 is: 1,265,457.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680,945.72 : 2,319,701.96 = 916,999.22 : x
  2. Step 2: Convert to fraction form
    1,680,945.72/2,319,701.96 = 916,999.22/x
  3. Step 3: Cross multiply
    1,680,945.72x = 2,319,701.96 × 916,999.22
  4. Step 4: Simplify right side
    1,680,945.72x = 2,127,164,887,952.47
  5. Step 5: Solve for x
    x = 2,127,164,887,952.47/1,680,945.72
  6. Step 6: Final answer
    x = 1,265,457.21

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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.