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Finding the Fourth Proportional to 495,830.88, 684,220.32 and 280,973.60

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Solution

The fourth proportional to 495,830.88, 684,220.32 and 280,973.60 is: 387,728.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,830.88 : 684,220.32 = 280,973.60 : x
  2. Step 2: Convert to fraction form
    495,830.88/684,220.32 = 280,973.60/x
  3. Step 3: Cross multiply
    495,830.88x = 684,220.32 × 280,973.60
  4. Step 4: Simplify right side
    495,830.88x = 192,247,846,503.55
  5. Step 5: Solve for x
    x = 192,247,846,503.55/495,830.88
  6. Step 6: Final answer
    x = 387,728.67

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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.