Home / 1,188,348,928.40-1,782,602,124.60-314,938,110.80

Finding the Fourth Proportional to 1,188,348,928.40, 1,782,602,124.60 and 314,938,110.80

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Solution

The fourth proportional to 1,188,348,928.40, 1,782,602,124.60 and 314,938,110.80 is: 472,428,031.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,348,928.40 : 1,782,602,124.60 = 314,938,110.80 : x
  2. Step 2: Convert to fraction form
    1,188,348,928.40/1,782,602,124.60 = 314,938,110.80/x
  3. Step 3: Cross multiply
    1,188,348,928.40x = 1,782,602,124.60 × 314,938,110.80
  4. Step 4: Simplify right side
    1,188,348,928.40x = 561,409,345,429,590,208
  5. Step 5: Solve for x
    x = 561,409,345,429,590,208/1,188,348,928.40
  6. Step 6: Final answer
    x = 472,428,031.88

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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.