Home / 899,309.07-1,241,031.54-491,401.98

Finding the Fourth Proportional to 899,309.07, 1,241,031.54 and 491,401.98

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Solution

The fourth proportional to 899,309.07, 1,241,031.54 and 491,401.98 is: 678,126.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,309.07 : 1,241,031.54 = 491,401.98 : x
  2. Step 2: Convert to fraction form
    899,309.07/1,241,031.54 = 491,401.98/x
  3. Step 3: Cross multiply
    899,309.07x = 1,241,031.54 × 491,401.98
  4. Step 4: Simplify right side
    899,309.07x = 609,845,355,998.45
  5. Step 5: Solve for x
    x = 609,845,355,998.45/899,309.07
  6. Step 6: Final answer
    x = 678,126.55

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Double scale
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Similar ratio
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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.