Finding the Fourth Proportional to 1,452,168,056.80, 2,178,252,085.20 and 361,651,124.80
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Solution
The fourth proportional to 1,452,168,056.80, 2,178,252,085.20 and 361,651,124.80 is: 542,476,687.20
Step by Step Solution
- Step 1: Write the proportion equation
1,452,168,056.80 : 2,178,252,085.20 = 361,651,124.80 : x - Step 2: Convert to fraction form
1,452,168,056.80/2,178,252,085.20 = 361,651,124.80/x - Step 3: Cross multiply
1,452,168,056.80x = 2,178,252,085.20 × 361,651,124.80 - Step 4: Simplify right side
1,452,168,056.80x = 787,767,316,710,525,440 - Step 5: Solve for x
x = 787,767,316,710,525,440/1,452,168,056.80 - Step 6: Final answer
x = 542,476,687.20
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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.