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Finding the Fourth Proportional to 553,651.90, 828,509.55 and 384,378.10

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Solution

The fourth proportional to 553,651.90, 828,509.55 and 384,378.10 is: 575,200.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,651.90 : 828,509.55 = 384,378.10 : x
  2. Step 2: Convert to fraction form
    553,651.90/828,509.55 = 384,378.10/x
  3. Step 3: Cross multiply
    553,651.90x = 828,509.55 × 384,378.10
  4. Step 4: Simplify right side
    553,651.90x = 318,460,926,660.86
  5. Step 5: Solve for x
    x = 318,460,926,660.86/553,651.90
  6. Step 6: Final answer
    x = 575,200.64

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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.