Finding the Fourth Proportional to 1,190,775,158.76, 1,643,475,403.21 and 689,260,462.94
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Solution
The fourth proportional to 1,190,775,158.76, 1,643,475,403.21 and 689,260,462.94 is: 951,298,495.70
Step by Step Solution
- Step 1: Write the proportion equation
1,190,775,158.76 : 1,643,475,403.21 = 689,260,462.94 : x - Step 2: Convert to fraction form
1,190,775,158.76/1,643,475,403.21 = 689,260,462.94/x - Step 3: Cross multiply
1,190,775,158.76x = 1,643,475,403.21 × 689,260,462.94 - Step 4: Simplify right side
1,190,775,158.76x = 1,132,782,617,250,128,768 - Step 5: Solve for x
x = 1,132,782,617,250,128,768/1,190,775,158.76 - Step 6: Final answer
x = 951,298,495.70
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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.