Home / 743,585.20-1,026,160.32-421,287.28

Finding the Fourth Proportional to 743,585.20, 1,026,160.32 and 421,287.28

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Solution

The fourth proportional to 743,585.20, 1,026,160.32 and 421,287.28 is: 581,383.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,585.20 : 1,026,160.32 = 421,287.28 : x
  2. Step 2: Convert to fraction form
    743,585.20/1,026,160.32 = 421,287.28/x
  3. Step 3: Cross multiply
    743,585.20x = 1,026,160.32 × 421,287.28
  4. Step 4: Simplify right side
    743,585.20x = 432,308,290,056.73
  5. Step 5: Solve for x
    x = 432,308,290,056.73/743,585.20
  6. Step 6: Final answer
    x = 581,383.67

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1.5x scale

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.