Home / 78,586,838,362.40-117,880,257,543.60-43,200,520,512.80

Finding the Fourth Proportional to 78,586,838,362.40, 117,880,257,543.60 and 43,200,520,512.80

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Solution

The fourth proportional to 78,586,838,362.40, 117,880,257,543.60 and 43,200,520,512.80 is: 64,800,780,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,586,838,362.40 : 117,880,257,543.60 = 43,200,520,512.80 : x
  2. Step 2: Convert to fraction form
    78,586,838,362.40/117,880,257,543.60 = 43,200,520,512.80/x
  3. Step 3: Cross multiply
    78,586,838,362.40x = 117,880,257,543.60 × 43,200,520,512.80
  4. Step 4: Simplify right side
    78,586,838,362.40x = 5,092,488,484,066,439,462,912
  5. Step 5: Solve for x
    x = 5,092,488,484,066,439,462,912/78,586,838,362.40
  6. Step 6: Final answer
    x = 64,800,780,769.20

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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.