Finding the Fourth Proportional to 1,712,212,809.21, 2,362,865,769.95 and 929,931,657.21
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Solution
The fourth proportional to 1,712,212,809.21, 2,362,865,769.95 and 929,931,657.21 is: 1,283,312,254.99
Step by Step Solution
- Step 1: Write the proportion equation
1,712,212,809.21 : 2,362,865,769.95 = 929,931,657.21 : x - Step 2: Convert to fraction form
1,712,212,809.21/2,362,865,769.95 = 929,931,657.21/x - Step 3: Cross multiply
1,712,212,809.21x = 2,362,865,769.95 × 929,931,657.21 - Step 4: Simplify right side
1,712,212,809.21x = 2,197,303,681,209,736,704 - Step 5: Solve for x
x = 2,197,303,681,209,736,704/1,712,212,809.21 - Step 6: Final answer
x = 1,283,312,254.99
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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.