Home / 758,905.12-1,047,247.86-419,351.50

Finding the Fourth Proportional to 758,905.12, 1,047,247.86 and 419,351.50

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Solution

The fourth proportional to 758,905.12, 1,047,247.86 and 419,351.50 is: 578,682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,905.12 : 1,047,247.86 = 419,351.50 : x
  2. Step 2: Convert to fraction form
    758,905.12/1,047,247.86 = 419,351.50/x
  3. Step 3: Cross multiply
    758,905.12x = 1,047,247.86 × 419,351.50
  4. Step 4: Simplify right side
    758,905.12x = 439,164,960,962.79
  5. Step 5: Solve for x
    x = 439,164,960,962.79/758,905.12
  6. Step 6: Final answer
    x = 578,682.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.