Home / 1,390,263.35-2,085,489.81-443,705.45

Finding the Fourth Proportional to 1,390,263.35, 2,085,489.81 and 443,705.45

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Solution

The fourth proportional to 1,390,263.35, 2,085,489.81 and 443,705.45 is: 665,588.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,263.35 : 2,085,489.81 = 443,705.45 : x
  2. Step 2: Convert to fraction form
    1,390,263.35/2,085,489.81 = 443,705.45/x
  3. Step 3: Cross multiply
    1,390,263.35x = 2,085,489.81 × 443,705.45
  4. Step 4: Simplify right side
    1,390,263.35x = 925,343,184,189.02
  5. Step 5: Solve for x
    x = 925,343,184,189.02/1,390,263.35
  6. Step 6: Final answer
    x = 665,588.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.