Home / 870,045,325.20-1,305,067,987.80-526,059,968.40

Finding the Fourth Proportional to 870,045,325.20, 1,305,067,987.80 and 526,059,968.40

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Solution

The fourth proportional to 870,045,325.20, 1,305,067,987.80 and 526,059,968.40 is: 789,089,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,045,325.20 : 1,305,067,987.80 = 526,059,968.40 : x
  2. Step 2: Convert to fraction form
    870,045,325.20/1,305,067,987.80 = 526,059,968.40/x
  3. Step 3: Cross multiply
    870,045,325.20x = 1,305,067,987.80 × 526,059,968.40
  4. Step 4: Simplify right side
    870,045,325.20x = 686,544,024,421,919,488
  5. Step 5: Solve for x
    x = 686,544,024,421,919,488/870,045,325.20
  6. Step 6: Final answer
    x = 789,089,952.60

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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.