Home / 1,208,931.60-1,668,259.71-664,979.57

Finding the Fourth Proportional to 1,208,931.60, 1,668,259.71 and 664,979.57

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Solution

The fourth proportional to 1,208,931.60, 1,668,259.71 and 664,979.57 is: 917,635.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,931.60 : 1,668,259.71 = 664,979.57 : x
  2. Step 2: Convert to fraction form
    1,208,931.60/1,668,259.71 = 664,979.57/x
  3. Step 3: Cross multiply
    1,208,931.60x = 1,668,259.71 × 664,979.57
  4. Step 4: Simplify right side
    1,208,931.60x = 1,109,358,617,108.58
  5. Step 5: Solve for x
    x = 1,109,358,617,108.58/1,208,931.60
  6. Step 6: Final answer
    x = 917,635.56

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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.