Home / 687,420.95-1,030,885.38-238,021.16

Finding the Fourth Proportional to 687,420.95, 1,030,885.38 and 238,021.16

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Solution

The fourth proportional to 687,420.95, 1,030,885.38 and 238,021.16 is: 356,946.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,420.95 : 1,030,885.38 = 238,021.16 : x
  2. Step 2: Convert to fraction form
    687,420.95/1,030,885.38 = 238,021.16/x
  3. Step 3: Cross multiply
    687,420.95x = 1,030,885.38 × 238,021.16
  4. Step 4: Simplify right side
    687,420.95x = 245,372,528,820.21
  5. Step 5: Solve for x
    x = 245,372,528,820.21/687,420.95
  6. Step 6: Final answer
    x = 356,946.54

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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.