Finding the Fourth Proportional to 1,211,132,954.80, 1,817,549,737.80 and 521,535,113.20
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Solution
The fourth proportional to 1,211,132,954.80, 1,817,549,737.80 and 521,535,113.20 is: 782,668,826.32
Step by Step Solution
- Step 1: Write the proportion equation
1,211,132,954.80 : 1,817,549,737.80 = 521,535,113.20 : x - Step 2: Convert to fraction form
1,211,132,954.80/1,817,549,737.80 = 521,535,113.20/x - Step 3: Cross multiply
1,211,132,954.80x = 1,817,549,737.80 × 521,535,113.20 - Step 4: Simplify right side
1,211,132,954.80x = 947,916,008,250,153,216 - Step 5: Solve for x
x = 947,916,008,250,153,216/1,211,132,954.80 - Step 6: Final answer
x = 782,668,826.32
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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.