Home / 645,492.44-890,766.92-359,006.38

Finding the Fourth Proportional to 645,492.44, 890,766.92 and 359,006.38

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Solution

The fourth proportional to 645,492.44, 890,766.92 and 359,006.38 is: 495,421.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,492.44 : 890,766.92 = 359,006.38 : x
  2. Step 2: Convert to fraction form
    645,492.44/890,766.92 = 359,006.38/x
  3. Step 3: Cross multiply
    645,492.44x = 890,766.92 × 359,006.38
  4. Step 4: Simplify right side
    645,492.44x = 319,791,006,043.55
  5. Step 5: Solve for x
    x = 319,791,006,043.55/645,492.44
  6. Step 6: Final answer
    x = 495,421.77

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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.