Finding the Fourth Proportional to 1,657,378,628.80, 2,486,366,541.60 and 688,128,222.40
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Solution
The fourth proportional to 1,657,378,628.80, 2,486,366,541.60 and 688,128,222.40 is: 1,032,316,308.88
Step by Step Solution
- Step 1: Write the proportion equation
1,657,378,628.80 : 2,486,366,541.60 = 688,128,222.40 : x - Step 2: Convert to fraction form
1,657,378,628.80/2,486,366,541.60 = 688,128,222.40/x - Step 3: Cross multiply
1,657,378,628.80x = 2,486,366,541.60 × 688,128,222.40 - Step 4: Simplify right side
1,657,378,628.80x = 1,710,938,988,506,043,648 - Step 5: Solve for x
x = 1,710,938,988,506,043,648/1,657,378,628.80 - Step 6: Final answer
x = 1,032,316,308.88
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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.