Finding the Fourth Proportional to 717,553,500.80, 1,076,330,251.20 and 390,185,844.80
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Solution
The fourth proportional to 717,553,500.80, 1,076,330,251.20 and 390,185,844.80 is: 585,278,767.20
Step by Step Solution
- Step 1: Write the proportion equation
717,553,500.80 : 1,076,330,251.20 = 390,185,844.80 : x - Step 2: Convert to fraction form
717,553,500.80/1,076,330,251.20 = 390,185,844.80/x - Step 3: Cross multiply
717,553,500.80x = 1,076,330,251.20 × 390,185,844.80 - Step 4: Simplify right side
717,553,500.80x = 419,968,828,348,268,224 - Step 5: Solve for x
x = 419,968,828,348,268,224/717,553,500.80 - Step 6: Final answer
x = 585,278,767.20
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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.