Home / 858,705.04-1,288,150.98-318,898

Finding the Fourth Proportional to 858,705.04, 1,288,150.98 and 318,898

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Solution

The fourth proportional to 858,705.04, 1,288,150.98 and 318,898 is: 478,381.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,705.04 : 1,288,150.98 = 318,898 : x
  2. Step 2: Convert to fraction form
    858,705.04/1,288,150.98 = 318,898/x
  3. Step 3: Cross multiply
    858,705.04x = 1,288,150.98 × 318,898
  4. Step 4: Simplify right side
    858,705.04x = 410,788,771,220.04
  5. Step 5: Solve for x
    x = 410,788,771,220.04/858,705.04
  6. Step 6: Final answer
    x = 478,381.69

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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.