Home / 1,298,894.70-1,945,389.60-667,070.40

Finding the Fourth Proportional to 1,298,894.70, 1,945,389.60 and 667,070.40

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Solution

The fourth proportional to 1,298,894.70, 1,945,389.60 and 667,070.40 is: 999,089.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,894.70 : 1,945,389.60 = 667,070.40 : x
  2. Step 2: Convert to fraction form
    1,298,894.70/1,945,389.60 = 667,070.40/x
  3. Step 3: Cross multiply
    1,298,894.70x = 1,945,389.60 × 667,070.40
  4. Step 4: Simplify right side
    1,298,894.70x = 1,297,711,818,627.84
  5. Step 5: Solve for x
    x = 1,297,711,818,627.84/1,298,894.70
  6. Step 6: Final answer
    x = 999,089.32

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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.