Home / 1,290,388.16-1,935,457.10-391,837.68

Finding the Fourth Proportional to 1,290,388.16, 1,935,457.10 and 391,837.68

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Solution

The fourth proportional to 1,290,388.16, 1,935,457.10 and 391,837.68 is: 587,718.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,388.16 : 1,935,457.10 = 391,837.68 : x
  2. Step 2: Convert to fraction form
    1,290,388.16/1,935,457.10 = 391,837.68/x
  3. Step 3: Cross multiply
    1,290,388.16x = 1,935,457.10 × 391,837.68
  4. Step 4: Simplify right side
    1,290,388.16x = 758,385,019,803.53
  5. Step 5: Solve for x
    x = 758,385,019,803.53/1,290,388.16
  6. Step 6: Final answer
    x = 587,718.52

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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.