Home / 859,783.74-1,289,675.55-385,915.50

Finding the Fourth Proportional to 859,783.74, 1,289,675.55 and 385,915.50

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Solution

The fourth proportional to 859,783.74, 1,289,675.55 and 385,915.50 is: 578,873.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,783.74 : 1,289,675.55 = 385,915.50 : x
  2. Step 2: Convert to fraction form
    859,783.74/1,289,675.55 = 385,915.50/x
  3. Step 3: Cross multiply
    859,783.74x = 1,289,675.55 × 385,915.50
  4. Step 4: Simplify right side
    859,783.74x = 497,705,784,716.03
  5. Step 5: Solve for x
    x = 497,705,784,716.03/859,783.74
  6. Step 6: Final answer
    x = 578,873.22

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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.