Home / 687,254.06-948,457.95-385,467.50

Finding the Fourth Proportional to 687,254.06, 948,457.95 and 385,467.50

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Solution

The fourth proportional to 687,254.06, 948,457.95 and 385,467.50 is: 531,971.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,254.06 : 948,457.95 = 385,467.50 : x
  2. Step 2: Convert to fraction form
    687,254.06/948,457.95 = 385,467.50/x
  3. Step 3: Cross multiply
    687,254.06x = 948,457.95 × 385,467.50
  4. Step 4: Simplify right side
    687,254.06x = 365,599,714,841.63
  5. Step 5: Solve for x
    x = 365,599,714,841.63/687,254.06
  6. Step 6: Final answer
    x = 531,971.71

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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.