Home / 680,140.40-1,020,210.60-306,892.40

Finding the Fourth Proportional to 680,140.40, 1,020,210.60 and 306,892.40

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Solution

The fourth proportional to 680,140.40, 1,020,210.60 and 306,892.40 is: 460,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,140.40 : 1,020,210.60 = 306,892.40 : x
  2. Step 2: Convert to fraction form
    680,140.40/1,020,210.60 = 306,892.40/x
  3. Step 3: Cross multiply
    680,140.40x = 1,020,210.60 × 306,892.40
  4. Step 4: Simplify right side
    680,140.40x = 313,094,879,539.44
  5. Step 5: Solve for x
    x = 313,094,879,539.44/680,140.40
  6. Step 6: Final answer
    x = 460,338.60

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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.