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Finding the Fourth Proportional to 670,843.60, 1,007,431.80 and 355,915.60

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Solution

The fourth proportional to 670,843.60, 1,007,431.80 and 355,915.60 is: 534,492.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,843.60 : 1,007,431.80 = 355,915.60 : x
  2. Step 2: Convert to fraction form
    670,843.60/1,007,431.80 = 355,915.60/x
  3. Step 3: Cross multiply
    670,843.60x = 1,007,431.80 × 355,915.60
  4. Step 4: Simplify right side
    670,843.60x = 358,560,693,556.08
  5. Step 5: Solve for x
    x = 358,560,693,556.08/670,843.60
  6. Step 6: Final answer
    x = 534,492.23

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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.