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Finding the Fourth Proportional to 452,628.76, 624,115.20 and 289,070.32

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Solution

The fourth proportional to 452,628.76, 624,115.20 and 289,070.32 is: 398,589.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,628.76 : 624,115.20 = 289,070.32 : x
  2. Step 2: Convert to fraction form
    452,628.76/624,115.20 = 289,070.32/x
  3. Step 3: Cross multiply
    452,628.76x = 624,115.20 × 289,070.32
  4. Step 4: Simplify right side
    452,628.76x = 180,413,180,580.86
  5. Step 5: Solve for x
    x = 180,413,180,580.86/452,628.76
  6. Step 6: Final answer
    x = 398,589.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.