Finding the Fourth Proportional to 840,552,564.40, 1,257,427,624.20 and 738,515,892.40
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Solution
The fourth proportional to 840,552,564.40, 1,257,427,624.20 and 738,515,892.40 is: 1,104,785,498.66
Step by Step Solution
- Step 1: Write the proportion equation
840,552,564.40 : 1,257,427,624.20 = 738,515,892.40 : x - Step 2: Convert to fraction form
840,552,564.40/1,257,427,624.20 = 738,515,892.40/x - Step 3: Cross multiply
840,552,564.40x = 1,257,427,624.20 × 738,515,892.40 - Step 4: Simplify right side
840,552,564.40x = 928,630,284,014,474,880 - Step 5: Solve for x
x = 928,630,284,014,474,880/840,552,564.40 - Step 6: Final answer
x = 1,104,785,498.66
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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.