Finding the Fourth Proportional to 753,313,462.40, 1,130,691,806.40 and 390,068,508.80
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Solution
The fourth proportional to 753,313,462.40, 1,130,691,806.40 and 390,068,508.80 is: 585,476,416.99
Step by Step Solution
- Step 1: Write the proportion equation
753,313,462.40 : 1,130,691,806.40 = 390,068,508.80 : x - Step 2: Convert to fraction form
753,313,462.40/1,130,691,806.40 = 390,068,508.80/x - Step 3: Cross multiply
753,313,462.40x = 1,130,691,806.40 × 390,068,508.80 - Step 4: Simplify right side
753,313,462.40x = 441,047,266,834,826,368 - Step 5: Solve for x
x = 441,047,266,834,826,368/753,313,462.40 - Step 6: Final answer
x = 585,476,416.99
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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.