Finding the Fourth Proportional to 1,660,615,620.63, 2,291,697,386.15 and 918,107,513.07
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Solution
The fourth proportional to 1,660,615,620.63, 2,291,697,386.15 and 918,107,513.07 is: 1,267,014,811.72
Step by Step Solution
- Step 1: Write the proportion equation
1,660,615,620.63 : 2,291,697,386.15 = 918,107,513.07 : x - Step 2: Convert to fraction form
1,660,615,620.63/2,291,697,386.15 = 918,107,513.07/x - Step 3: Cross multiply
1,660,615,620.63x = 2,291,697,386.15 × 918,107,513.07 - Step 4: Simplify right side
1,660,615,620.63x = 2,104,024,587,907,196,160 - Step 5: Solve for x
x = 2,104,024,587,907,196,160/1,660,615,620.63 - Step 6: Final answer
x = 1,267,014,811.72
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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.