Home / 830,522.70-1,247,166.45-456,813.90

Finding the Fourth Proportional to 830,522.70, 1,247,166.45 and 456,813.90

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Solution

The fourth proportional to 830,522.70, 1,247,166.45 and 456,813.90 is: 685,981.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,522.70 : 1,247,166.45 = 456,813.90 : x
  2. Step 2: Convert to fraction form
    830,522.70/1,247,166.45 = 456,813.90/x
  3. Step 3: Cross multiply
    830,522.70x = 1,247,166.45 × 456,813.90
  4. Step 4: Simplify right side
    830,522.70x = 569,722,969,973.66
  5. Step 5: Solve for x
    x = 569,722,969,973.66/830,522.70
  6. Step 6: Final answer
    x = 685,981.21

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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.