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Finding the Fourth Proportional to 649,323.40, 973,985.10 and 491,859.40

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Solution

The fourth proportional to 649,323.40, 973,985.10 and 491,859.40 is: 737,789.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,323.40 : 973,985.10 = 491,859.40 : x
  2. Step 2: Convert to fraction form
    649,323.40/973,985.10 = 491,859.40/x
  3. Step 3: Cross multiply
    649,323.40x = 973,985.10 × 491,859.40
  4. Step 4: Simplify right side
    649,323.40x = 479,063,726,894.94
  5. Step 5: Solve for x
    x = 479,063,726,894.94/649,323.40
  6. Step 6: Final answer
    x = 737,789.10

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Half scale
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Double scale
Find fourth proportional to 649,324.40, 973,986.60 and 491,860.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.