Home / 688,711.20-1,033,066.80-613,915.80

Finding the Fourth Proportional to 688,711.20, 1,033,066.80 and 613,915.80

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Solution

The fourth proportional to 688,711.20, 1,033,066.80 and 613,915.80 is: 920,873.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,711.20 : 1,033,066.80 = 613,915.80 : x
  2. Step 2: Convert to fraction form
    688,711.20/1,033,066.80 = 613,915.80/x
  3. Step 3: Cross multiply
    688,711.20x = 1,033,066.80 × 613,915.80
  4. Step 4: Simplify right side
    688,711.20x = 634,216,030,975.44
  5. Step 5: Solve for x
    x = 634,216,030,975.44/688,711.20
  6. Step 6: Final answer
    x = 920,873.70

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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.