Home / 989,626.48-1,364,842.20-688,539.76

Finding the Fourth Proportional to 989,626.48, 1,364,842.20 and 688,539.76

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Solution

The fourth proportional to 989,626.48, 1,364,842.20 and 688,539.76 is: 949,598.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,626.48 : 1,364,842.20 = 688,539.76 : x
  2. Step 2: Convert to fraction form
    989,626.48/1,364,842.20 = 688,539.76/x
  3. Step 3: Cross multiply
    989,626.48x = 1,364,842.20 × 688,539.76
  4. Step 4: Simplify right side
    989,626.48x = 939,748,120,825.87
  5. Step 5: Solve for x
    x = 939,748,120,825.87/989,626.48
  6. Step 6: Final answer
    x = 949,598.80

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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.