Home / 646,739,937.60-970,118,200.80-215,918,433.60

Finding the Fourth Proportional to 646,739,937.60, 970,118,200.80 and 215,918,433.60

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Solution

The fourth proportional to 646,739,937.60, 970,118,200.80 and 215,918,433.60 is: 323,880,419.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,739,937.60 : 970,118,200.80 = 215,918,433.60 : x
  2. Step 2: Convert to fraction form
    646,739,937.60/970,118,200.80 = 215,918,433.60/x
  3. Step 3: Cross multiply
    646,739,937.60x = 970,118,200.80 × 215,918,433.60
  4. Step 4: Simplify right side
    646,739,937.60x = 209,466,402,323,586,240
  5. Step 5: Solve for x
    x = 209,466,402,323,586,240/646,739,937.60
  6. Step 6: Final answer
    x = 323,880,419.54

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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.