Home / 1,401,805.77-2,102,678.48-390,900.81

Finding the Fourth Proportional to 1,401,805.77, 2,102,678.48 and 390,900.81

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Solution

The fourth proportional to 1,401,805.77, 2,102,678.48 and 390,900.81 is: 586,342.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401,805.77 : 2,102,678.48 = 390,900.81 : x
  2. Step 2: Convert to fraction form
    1,401,805.77/2,102,678.48 = 390,900.81/x
  3. Step 3: Cross multiply
    1,401,805.77x = 2,102,678.48 × 390,900.81
  4. Step 4: Simplify right side
    1,401,805.77x = 821,938,729,863.87
  5. Step 5: Solve for x
    x = 821,938,729,863.87/1,401,805.77
  6. Step 6: Final answer
    x = 586,342.81

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1.5x scale

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.