Home / 783,487.18-1,175,563.23-428,086.01

Finding the Fourth Proportional to 783,487.18, 1,175,563.23 and 428,086.01

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Solution

The fourth proportional to 783,487.18, 1,175,563.23 and 428,086.01 is: 642,310.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,487.18 : 1,175,563.23 = 428,086.01 : x
  2. Step 2: Convert to fraction form
    783,487.18/1,175,563.23 = 428,086.01/x
  3. Step 3: Cross multiply
    783,487.18x = 1,175,563.23 × 428,086.01
  4. Step 4: Simplify right side
    783,487.18x = 503,242,173,967.00
  5. Step 5: Solve for x
    x = 503,242,173,967.00/783,487.18
  6. Step 6: Final answer
    x = 642,310.67

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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.