Home / 743,038.92-1,025,405.58-420,740.28

Finding the Fourth Proportional to 743,038.92, 1,025,405.58 and 420,740.28

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Solution

The fourth proportional to 743,038.92, 1,025,405.58 and 420,740.28 is: 580,628.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,038.92 : 1,025,405.58 = 420,740.28 : x
  2. Step 2: Convert to fraction form
    743,038.92/1,025,405.58 = 420,740.28/x
  3. Step 3: Cross multiply
    743,038.92x = 1,025,405.58 × 420,740.28
  4. Step 4: Simplify right side
    743,038.92x = 431,429,430,842.76
  5. Step 5: Solve for x
    x = 431,429,430,842.76/743,038.92
  6. Step 6: Final answer
    x = 580,628.31

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Double scale
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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.