Home / 698,579.70-1,047,869.55-432,859.20

Finding the Fourth Proportional to 698,579.70, 1,047,869.55 and 432,859.20

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Solution

The fourth proportional to 698,579.70, 1,047,869.55 and 432,859.20 is: 649,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,579.70 : 1,047,869.55 = 432,859.20 : x
  2. Step 2: Convert to fraction form
    698,579.70/1,047,869.55 = 432,859.20/x
  3. Step 3: Cross multiply
    698,579.70x = 1,047,869.55 × 432,859.20
  4. Step 4: Simplify right side
    698,579.70x = 453,579,975,117.36
  5. Step 5: Solve for x
    x = 453,579,975,117.36/698,579.70
  6. Step 6: Final answer
    x = 649,288.80

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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.