Finding the Fourth Proportional to 1,225,168,420.14, 1,690,875,358.40 and 696,611,602.94
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Solution
The fourth proportional to 1,225,168,420.14, 1,690,875,358.40 and 696,611,602.94 is: 961,405,284.71
Step by Step Solution
- Step 1: Write the proportion equation
1,225,168,420.14 : 1,690,875,358.40 = 696,611,602.94 : x - Step 2: Convert to fraction form
1,225,168,420.14/1,690,875,358.40 = 696,611,602.94/x - Step 3: Cross multiply
1,225,168,420.14x = 1,690,875,358.40 × 696,611,602.94 - Step 4: Simplify right side
1,225,168,420.14x = 1,177,883,393,786,771,200 - Step 5: Solve for x
x = 1,177,883,393,786,771,200/1,225,168,420.14 - Step 6: Final answer
x = 961,405,284.71
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1.5x scale
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.