Finding the Fourth Proportional to 926,220,851.70, 1,389,331,277.55 and 380,781,107.70
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Solution
The fourth proportional to 926,220,851.70, 1,389,331,277.55 and 380,781,107.70 is: 571,171,661.55
Step by Step Solution
- Step 1: Write the proportion equation
926,220,851.70 : 1,389,331,277.55 = 380,781,107.70 : x - Step 2: Convert to fraction form
926,220,851.70/1,389,331,277.55 = 380,781,107.70/x - Step 3: Cross multiply
926,220,851.70x = 1,389,331,277.55 × 380,781,107.70 - Step 4: Simplify right side
926,220,851.70x = 529,031,102,827,745,088 - Step 5: Solve for x
x = 529,031,102,827,745,088/926,220,851.70 - Step 6: Final answer
x = 571,171,661.55
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Double scale
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Similar ratio
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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.