Home / 2,115,014.85-2,918,412.57-1,209,421.89

Finding the Fourth Proportional to 2,115,014.85, 2,918,412.57 and 1,209,421.89

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Solution

The fourth proportional to 2,115,014.85, 2,918,412.57 and 1,209,421.89 is: 1,668,826.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,014.85 : 2,918,412.57 = 1,209,421.89 : x
  2. Step 2: Convert to fraction form
    2,115,014.85/2,918,412.57 = 1,209,421.89/x
  3. Step 3: Cross multiply
    2,115,014.85x = 2,918,412.57 × 1,209,421.89
  4. Step 4: Simplify right side
    2,115,014.85x = 3,529,592,046,209.16
  5. Step 5: Solve for x
    x = 3,529,592,046,209.16/2,115,014.85
  6. Step 6: Final answer
    x = 1,668,826.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.