Home / 390,006,896,650.04-538,213,880,600.91-216,395,179,618.52

Finding the Fourth Proportional to 390,006,896,650.04, 538,213,880,600.91 and 216,395,179,618.52

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Solution

The fourth proportional to 390,006,896,650.04, 538,213,880,600.91 and 216,395,179,618.52 is: 298,627,768,806.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,006,896,650.04 : 538,213,880,600.91 = 216,395,179,618.52 : x
  2. Step 2: Convert to fraction form
    390,006,896,650.04/538,213,880,600.91 = 216,395,179,618.52/x
  3. Step 3: Cross multiply
    390,006,896,650.04x = 538,213,880,600.91 × 216,395,179,618.52
  4. Step 4: Simplify right side
    390,006,896,650.04x = 116,466,889,365,814,580,871,168
  5. Step 5: Solve for x
    x = 116,466,889,365,814,580,871,168/390,006,896,650.04
  6. Step 6: Final answer
    x = 298,627,768,806.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.