Finding the Fourth Proportional to 1,386,306,959,037.80, 1,912,399,523,225.70 and 905,412,205,368.72
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Solution
The fourth proportional to 1,386,306,959,037.80, 1,912,399,523,225.70 and 905,412,205,368.72 is: 1,249,009,000,915.40
Step by Step Solution
- Step 1: Write the proportion equation
1,386,306,959,037.80 : 1,912,399,523,225.70 = 905,412,205,368.72 : x - Step 2: Convert to fraction form
1,386,306,959,037.80/1,912,399,523,225.70 = 905,412,205,368.72/x - Step 3: Cross multiply
1,386,306,959,037.80x = 1,912,399,523,225.70 × 905,412,205,368.72 - Step 4: Simplify right side
1,386,306,959,037.80x = 1,731,509,869,869,869,733,773,312 - Step 5: Solve for x
x = 1,731,509,869,869,869,733,773,312/1,386,306,959,037.80 - Step 6: Final answer
x = 1,249,009,000,915.40
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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.