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Finding the Fourth Proportional to 393,465.60, 589,323.60 and 304,430.40

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Solution

The fourth proportional to 393,465.60, 589,323.60 and 304,430.40 is: 455,968.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,465.60 : 589,323.60 = 304,430.40 : x
  2. Step 2: Convert to fraction form
    393,465.60/589,323.60 = 304,430.40/x
  3. Step 3: Cross multiply
    393,465.60x = 589,323.60 × 304,430.40
  4. Step 4: Simplify right side
    393,465.60x = 179,408,019,277.44
  5. Step 5: Solve for x
    x = 179,408,019,277.44/393,465.60
  6. Step 6: Final answer
    x = 455,968.75

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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.