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Finding the Fourth Proportional to 503,993.48, 754,847.58 and 390,766.28

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Solution

The fourth proportional to 503,993.48, 754,847.58 and 390,766.28 is: 585,263.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,993.48 : 754,847.58 = 390,766.28 : x
  2. Step 2: Convert to fraction form
    503,993.48/754,847.58 = 390,766.28/x
  3. Step 3: Cross multiply
    503,993.48x = 754,847.58 × 390,766.28
  4. Step 4: Simplify right side
    503,993.48x = 294,968,980,803.60
  5. Step 5: Solve for x
    x = 294,968,980,803.60/503,993.48
  6. Step 6: Final answer
    x = 585,263.49

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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.