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Finding the Fourth Proportional to 649,393.69, 896,447.79 and 496,438.24

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Solution

The fourth proportional to 649,393.69, 896,447.79 and 496,438.24 is: 685,302.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,393.69 : 896,447.79 = 496,438.24 : x
  2. Step 2: Convert to fraction form
    649,393.69/896,447.79 = 496,438.24/x
  3. Step 3: Cross multiply
    649,393.69x = 896,447.79 × 496,438.24
  4. Step 4: Simplify right side
    649,393.69x = 445,030,963,119.49
  5. Step 5: Solve for x
    x = 445,030,963,119.49/649,393.69
  6. Step 6: Final answer
    x = 685,302.26

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Double scale
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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.