Home / 712,130,081.20-1,068,195,121.80-400,918,231.60

Finding the Fourth Proportional to 712,130,081.20, 1,068,195,121.80 and 400,918,231.60

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Solution

The fourth proportional to 712,130,081.20, 1,068,195,121.80 and 400,918,231.60 is: 601,377,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,130,081.20 : 1,068,195,121.80 = 400,918,231.60 : x
  2. Step 2: Convert to fraction form
    712,130,081.20/1,068,195,121.80 = 400,918,231.60/x
  3. Step 3: Cross multiply
    712,130,081.20x = 1,068,195,121.80 × 400,918,231.60
  4. Step 4: Simplify right side
    712,130,081.20x = 428,258,899,235,802,624
  5. Step 5: Solve for x
    x = 428,258,899,235,802,624/712,130,081.20
  6. Step 6: Final answer
    x = 601,377,347.40

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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.