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Finding the Fourth Proportional to 788,668.40, 1,183,877.40 and 489,486.80

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Solution

The fourth proportional to 788,668.40, 1,183,877.40 and 489,486.80 is: 734,773.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,668.40 : 1,183,877.40 = 489,486.80 : x
  2. Step 2: Convert to fraction form
    788,668.40/1,183,877.40 = 489,486.80/x
  3. Step 3: Cross multiply
    788,668.40x = 1,183,877.40 × 489,486.80
  4. Step 4: Simplify right side
    788,668.40x = 579,492,360,118.32
  5. Step 5: Solve for x
    x = 579,492,360,118.32/788,668.40
  6. Step 6: Final answer
    x = 734,773.14

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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.