Home / 753,312,608.40-1,129,968,912.60-389,918,355.60

Finding the Fourth Proportional to 753,312,608.40, 1,129,968,912.60 and 389,918,355.60

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Solution

The fourth proportional to 753,312,608.40, 1,129,968,912.60 and 389,918,355.60 is: 584,877,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,312,608.40 : 1,129,968,912.60 = 389,918,355.60 : x
  2. Step 2: Convert to fraction form
    753,312,608.40/1,129,968,912.60 = 389,918,355.60/x
  3. Step 3: Cross multiply
    753,312,608.40x = 1,129,968,912.60 × 389,918,355.60
  4. Step 4: Simplify right side
    753,312,608.40x = 440,595,620,280,112,128
  5. Step 5: Solve for x
    x = 440,595,620,280,112,128/753,312,608.40
  6. Step 6: Final answer
    x = 584,877,533.40

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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.