Finding the Fourth Proportional to 19,155,712.60, 28,708,617.64 and 7,782,865.48
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Solution
The fourth proportional to 19,155,712.60, 28,708,617.64 and 7,782,865.48 is: 11,664,160.65
Step by Step Solution
- Step 1: Write the proportion equation
19,155,712.60 : 28,708,617.64 = 7,782,865.48 : x - Step 2: Convert to fraction form
19,155,712.60/28,708,617.64 = 7,782,865.48/x - Step 3: Cross multiply
19,155,712.60x = 28,708,617.64 × 7,782,865.48 - Step 4: Simplify right side
19,155,712.60x = 223,435,309,208,875.09 - Step 5: Solve for x
x = 223,435,309,208,875.09/19,155,712.60 - Step 6: Final answer
x = 11,664,160.65
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.