Home / 679,320.05-1,019,256.84-342,457.79

Finding the Fourth Proportional to 679,320.05, 1,019,256.84 and 342,457.79

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Solution

The fourth proportional to 679,320.05, 1,019,256.84 and 342,457.79 is: 513,826.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,320.05 : 1,019,256.84 = 342,457.79 : x
  2. Step 2: Convert to fraction form
    679,320.05/1,019,256.84 = 342,457.79/x
  3. Step 3: Cross multiply
    679,320.05x = 1,019,256.84 × 342,457.79
  4. Step 4: Simplify right side
    679,320.05x = 349,052,439,772.50
  5. Step 5: Solve for x
    x = 349,052,439,772.50/679,320.05
  6. Step 6: Final answer
    x = 513,826.20

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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.