Finding the Fourth Proportional to 717,330,884.40, 989,886,035.10 and 399,774,232.74
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Solution
The fourth proportional to 717,330,884.40, 989,886,035.10 and 399,774,232.74 is: 551,671,395.71
Step by Step Solution
- Step 1: Write the proportion equation
717,330,884.40 : 989,886,035.10 = 399,774,232.74 : x - Step 2: Convert to fraction form
717,330,884.40/989,886,035.10 = 399,774,232.74/x - Step 3: Cross multiply
717,330,884.40x = 989,886,035.10 × 399,774,232.74 - Step 4: Simplify right side
717,330,884.40x = 395,730,930,182,143,232 - Step 5: Solve for x
x = 395,730,930,182,143,232/717,330,884.40 - Step 6: Final answer
x = 551,671,395.71
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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.