Home / 858,644.10-1,288,111.95-459,176.40

Finding the Fourth Proportional to 858,644.10, 1,288,111.95 and 459,176.40

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Solution

The fourth proportional to 858,644.10, 1,288,111.95 and 459,176.40 is: 688,842.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,644.10 : 1,288,111.95 = 459,176.40 : x
  2. Step 2: Convert to fraction form
    858,644.10/1,288,111.95 = 459,176.40/x
  3. Step 3: Cross multiply
    858,644.10x = 1,288,111.95 × 459,176.40
  4. Step 4: Simplify right side
    858,644.10x = 591,470,607,997.98
  5. Step 5: Solve for x
    x = 591,470,607,997.98/858,644.10
  6. Step 6: Final answer
    x = 688,842.57

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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.