Home / 1,100,804.85-1,651,207.28-390,904.65

Finding the Fourth Proportional to 1,100,804.85, 1,651,207.28 and 390,904.65

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Solution

The fourth proportional to 1,100,804.85, 1,651,207.28 and 390,904.65 is: 586,356.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,804.85 : 1,651,207.28 = 390,904.65 : x
  2. Step 2: Convert to fraction form
    1,100,804.85/1,651,207.28 = 390,904.65/x
  3. Step 3: Cross multiply
    1,100,804.85x = 1,651,207.28 × 390,904.65
  4. Step 4: Simplify right side
    1,100,804.85x = 645,464,601,911.33
  5. Step 5: Solve for x
    x = 645,464,601,911.33/1,100,804.85
  6. Step 6: Final answer
    x = 586,356.98

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Double scale
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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.