Home / 830,039.82-1,143,042.99-721,094.40

Finding the Fourth Proportional to 830,039.82, 1,143,042.99 and 721,094.40

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Solution

The fourth proportional to 830,039.82, 1,143,042.99 and 721,094.40 is: 993,014.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,039.82 : 1,143,042.99 = 721,094.40 : x
  2. Step 2: Convert to fraction form
    830,039.82/1,143,042.99 = 721,094.40/x
  3. Step 3: Cross multiply
    830,039.82x = 1,143,042.99 × 721,094.40
  4. Step 4: Simplify right side
    830,039.82x = 824,241,899,048.26
  5. Step 5: Solve for x
    x = 824,241,899,048.26/830,039.82
  6. Step 6: Final answer
    x = 993,014.89

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1.5x scale

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.