Home / 1,209,399-1,668,928.76-665,483.94

Finding the Fourth Proportional to 1,209,399, 1,668,928.76 and 665,483.94

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Solution

The fourth proportional to 1,209,399, 1,668,928.76 and 665,483.94 is: 918,344.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,399 : 1,668,928.76 = 665,483.94 : x
  2. Step 2: Convert to fraction form
    1,209,399/1,668,928.76 = 665,483.94/x
  3. Step 3: Cross multiply
    1,209,399x = 1,668,928.76 × 665,483.94
  4. Step 4: Simplify right side
    1,209,399x = 1,110,645,286,784.11
  5. Step 5: Solve for x
    x = 1,110,645,286,784.11/1,209,399
  6. Step 6: Final answer
    x = 918,344.80

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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.