Home / 402,407,999.10-603,611,998.65-129,806,322.30

Finding the Fourth Proportional to 402,407,999.10, 603,611,998.65 and 129,806,322.30

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Solution

The fourth proportional to 402,407,999.10, 603,611,998.65 and 129,806,322.30 is: 194,709,483.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,407,999.10 : 603,611,998.65 = 129,806,322.30 : x
  2. Step 2: Convert to fraction form
    402,407,999.10/603,611,998.65 = 129,806,322.30/x
  3. Step 3: Cross multiply
    402,407,999.10x = 603,611,998.65 × 129,806,322.30
  4. Step 4: Simplify right side
    402,407,999.10x = 78,352,653,640,909,056
  5. Step 5: Solve for x
    x = 78,352,653,640,909,056/402,407,999.10
  6. Step 6: Final answer
    x = 194,709,483.45

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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.