Finding the Fourth Proportional to 778,312,929.28, 1,074,039,765.24 and 465,219,763.96
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Solution
The fourth proportional to 778,312,929.28, 1,074,039,765.24 and 465,219,763.96 is: 641,984,100.83
Step by Step Solution
- Step 1: Write the proportion equation
778,312,929.28 : 1,074,039,765.24 = 465,219,763.96 : x - Step 2: Convert to fraction form
778,312,929.28/1,074,039,765.24 = 465,219,763.96/x - Step 3: Cross multiply
778,312,929.28x = 1,074,039,765.24 × 465,219,763.96 - Step 4: Simplify right side
778,312,929.28x = 499,664,526,068,606,592 - Step 5: Solve for x
x = 499,664,526,068,606,592/778,312,929.28 - Step 6: Final answer
x = 641,984,100.83
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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.