Home / 763,329.60-1,144,015.20-426,369.60

Finding the Fourth Proportional to 763,329.60, 1,144,015.20 and 426,369.60

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Solution

The fourth proportional to 763,329.60, 1,144,015.20 and 426,369.60 is: 639,007.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,329.60 : 1,144,015.20 = 426,369.60 : x
  2. Step 2: Convert to fraction form
    763,329.60/1,144,015.20 = 426,369.60/x
  3. Step 3: Cross multiply
    763,329.60x = 1,144,015.20 × 426,369.60
  4. Step 4: Simplify right side
    763,329.60x = 487,773,303,217.92
  5. Step 5: Solve for x
    x = 487,773,303,217.92/763,329.60
  6. Step 6: Final answer
    x = 639,007.45

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Double scale
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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.