Home / 858,421.04-1,287,618.45-290,201.28

Finding the Fourth Proportional to 858,421.04, 1,287,618.45 and 290,201.28

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Solution

The fourth proportional to 858,421.04, 1,287,618.45 and 290,201.28 is: 435,297.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,421.04 : 1,287,618.45 = 290,201.28 : x
  2. Step 2: Convert to fraction form
    858,421.04/1,287,618.45 = 290,201.28/x
  3. Step 3: Cross multiply
    858,421.04x = 1,287,618.45 × 290,201.28
  4. Step 4: Simplify right side
    858,421.04x = 373,668,522,341.62
  5. Step 5: Solve for x
    x = 373,668,522,341.62/858,421.04
  6. Step 6: Final answer
    x = 435,297.49

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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.