Finding the Fourth Proportional to 611,989.60, 917,985.12 and 191,267.68
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Solution
The fourth proportional to 611,989.60, 917,985.12 and 191,267.68 is: 286,901.75
Step by Step Solution
- Step 1: Write the proportion equation
611,989.60 : 917,985.12 = 191,267.68 : x - Step 2: Convert to fraction form
611,989.60/917,985.12 = 191,267.68/x - Step 3: Cross multiply
611,989.60x = 917,985.12 × 191,267.68 - Step 4: Simplify right side
611,989.60x = 175,580,884,176.92 - Step 5: Solve for x
x = 175,580,884,176.92/611,989.60 - Step 6: Final answer
x = 286,901.75
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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.