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Finding the Fourth Proportional to 886,699.89, 1,223,675.07 and 484,291.89

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Solution

The fourth proportional to 886,699.89, 1,223,675.07 and 484,291.89 is: 668,338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,699.89 : 1,223,675.07 = 484,291.89 : x
  2. Step 2: Convert to fraction form
    886,699.89/1,223,675.07 = 484,291.89/x
  3. Step 3: Cross multiply
    886,699.89x = 1,223,675.07 × 484,291.89
  4. Step 4: Simplify right side
    886,699.89x = 592,615,912,396.18
  5. Step 5: Solve for x
    x = 592,615,912,396.18/886,699.89
  6. Step 6: Final answer
    x = 668,338.77

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1.5x scale

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.