Finding the Fourth Proportional to 717,553,501.80, 1,076,330,252.70 and 390,185,845.80
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Solution
The fourth proportional to 717,553,501.80, 1,076,330,252.70 and 390,185,845.80 is: 585,278,768.70
Step by Step Solution
- Step 1: Write the proportion equation
717,553,501.80 : 1,076,330,252.70 = 390,185,845.80 : x - Step 2: Convert to fraction form
717,553,501.80/1,076,330,252.70 = 390,185,845.80/x - Step 3: Cross multiply
717,553,501.80x = 1,076,330,252.70 × 390,185,845.80 - Step 4: Simplify right side
717,553,501.80x = 419,968,830,009,877,248 - Step 5: Solve for x
x = 419,968,830,009,877,248/717,553,501.80 - Step 6: Final answer
x = 585,278,768.70
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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.