Home / 1,778,318-2,667,483.84-430,478.40

Finding the Fourth Proportional to 1,778,318, 2,667,483.84 and 430,478.40

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Solution

The fourth proportional to 1,778,318, 2,667,483.84 and 430,478.40 is: 645,719.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778,318 : 2,667,483.84 = 430,478.40 : x
  2. Step 2: Convert to fraction form
    1,778,318/2,667,483.84 = 430,478.40/x
  3. Step 3: Cross multiply
    1,778,318x = 2,667,483.84 × 430,478.40
  4. Step 4: Simplify right side
    1,778,318x = 1,148,294,175,469.06
  5. Step 5: Solve for x
    x = 1,148,294,175,469.06/1,778,318
  6. Step 6: Final answer
    x = 645,719.26

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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.