Finding the Fourth Proportional to 1,386,306,959,037.80, 1,912,399,523,225.70 and 905,412,205,368.70
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Solution
The fourth proportional to 1,386,306,959,037.80, 1,912,399,523,225.70 and 905,412,205,368.70 is: 1,249,009,000,915.37
Step by Step Solution
- Step 1: Write the proportion equation
1,386,306,959,037.80 : 1,912,399,523,225.70 = 905,412,205,368.70 : x - Step 2: Convert to fraction form
1,386,306,959,037.80/1,912,399,523,225.70 = 905,412,205,368.70/x - Step 3: Cross multiply
1,386,306,959,037.80x = 1,912,399,523,225.70 × 905,412,205,368.70 - Step 4: Simplify right side
1,386,306,959,037.80x = 1,731,509,869,869,831,347,503,104 - Step 5: Solve for x
x = 1,731,509,869,869,831,347,503,104/1,386,306,959,037.80 - Step 6: Final answer
x = 1,249,009,000,915.37
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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.