Finding the Fourth Proportional to 971,541,794.70, 1,457,312,692.05 and 644,386,715.10
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Solution
The fourth proportional to 971,541,794.70, 1,457,312,692.05 and 644,386,715.10 is: 966,580,072.65
Step by Step Solution
- Step 1: Write the proportion equation
971,541,794.70 : 1,457,312,692.05 = 644,386,715.10 : x - Step 2: Convert to fraction form
971,541,794.70/1,457,312,692.05 = 644,386,715.10/x - Step 3: Cross multiply
971,541,794.70x = 1,457,312,692.05 × 644,386,715.10 - Step 4: Simplify right side
971,541,794.70x = 939,072,938,503,637,376 - Step 5: Solve for x
x = 939,072,938,503,637,376/971,541,794.70 - Step 6: Final answer
x = 966,580,072.65
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Double scale
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1.5x scale
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.