Home / 817,153.80-1,225,730.70-498,289.20

Finding the Fourth Proportional to 817,153.80, 1,225,730.70 and 498,289.20

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Solution

The fourth proportional to 817,153.80, 1,225,730.70 and 498,289.20 is: 747,433.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,153.80 : 1,225,730.70 = 498,289.20 : x
  2. Step 2: Convert to fraction form
    817,153.80/1,225,730.70 = 498,289.20/x
  3. Step 3: Cross multiply
    817,153.80x = 1,225,730.70 × 498,289.20
  4. Step 4: Simplify right side
    817,153.80x = 610,768,369,918.44
  5. Step 5: Solve for x
    x = 610,768,369,918.44/817,153.80
  6. Step 6: Final answer
    x = 747,433.80

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Double scale
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Similar ratio
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1.5x scale

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.