Home / 1,258,479,068.60-1,887,718,602.90-800,447,785.40

Finding the Fourth Proportional to 1,258,479,068.60, 1,887,718,602.90 and 800,447,785.40

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Solution

The fourth proportional to 1,258,479,068.60, 1,887,718,602.90 and 800,447,785.40 is: 1,200,671,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,479,068.60 : 1,887,718,602.90 = 800,447,785.40 : x
  2. Step 2: Convert to fraction form
    1,258,479,068.60/1,887,718,602.90 = 800,447,785.40/x
  3. Step 3: Cross multiply
    1,258,479,068.60x = 1,887,718,602.90 × 800,447,785.40
  4. Step 4: Simplify right side
    1,258,479,068.60x = 1,511,020,175,149,687,040
  5. Step 5: Solve for x
    x = 1,511,020,175,149,687,040/1,258,479,068.60
  6. Step 6: Final answer
    x = 1,200,671,678.10

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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.