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Finding the Fourth Proportional to 649,388.55, 896,078.58 and 358,960.89

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Solution

The fourth proportional to 649,388.55, 896,078.58 and 358,960.89 is: 495,323.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,388.55 : 896,078.58 = 358,960.89 : x
  2. Step 2: Convert to fraction form
    649,388.55/896,078.58 = 358,960.89/x
  3. Step 3: Cross multiply
    649,388.55x = 896,078.58 × 358,960.89
  4. Step 4: Simplify right side
    649,388.55x = 321,657,164,586.74
  5. Step 5: Solve for x
    x = 321,657,164,586.74/649,388.55
  6. Step 6: Final answer
    x = 495,323.12

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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.