Finding the Fourth Proportional to 578,688,401.20, 868,128,246.60 and 268,106,407.60
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Solution
The fourth proportional to 578,688,401.20, 868,128,246.60 and 268,106,407.60 is: 402,203,923.65
Step by Step Solution
- Step 1: Write the proportion equation
578,688,401.20 : 868,128,246.60 = 268,106,407.60 : x - Step 2: Convert to fraction form
578,688,401.20/868,128,246.60 = 268,106,407.60/x - Step 3: Cross multiply
578,688,401.20x = 868,128,246.60 × 268,106,407.60 - Step 4: Simplify right side
578,688,401.20x = 232,750,745,532,012,928 - Step 5: Solve for x
x = 232,750,745,532,012,928/578,688,401.20 - Step 6: Final answer
x = 402,203,923.65
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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.