Home / 1,258,416,085.60-1,887,624,128.40-800,384,802.40

Finding the Fourth Proportional to 1,258,416,085.60, 1,887,624,128.40 and 800,384,802.40

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Solution

The fourth proportional to 1,258,416,085.60, 1,887,624,128.40 and 800,384,802.40 is: 1,200,577,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,416,085.60 : 1,887,624,128.40 = 800,384,802.40 : x
  2. Step 2: Convert to fraction form
    1,258,416,085.60/1,887,624,128.40 = 800,384,802.40/x
  3. Step 3: Cross multiply
    1,258,416,085.60x = 1,887,624,128.40 × 800,384,802.40
  4. Step 4: Simplify right side
    1,258,416,085.60x = 1,510,825,665,014,906,368
  5. Step 5: Solve for x
    x = 1,510,825,665,014,906,368/1,258,416,085.60
  6. Step 6: Final answer
    x = 1,200,577,203.60

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1.5x scale

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.