Finding the Fourth Proportional to 717,930,184.84, 990,743,656.98 and 387,905,323.84
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Solution
The fourth proportional to 717,930,184.84, 990,743,656.98 and 387,905,323.84 is: 535,309,347.93
Step by Step Solution
- Step 1: Write the proportion equation
717,930,184.84 : 990,743,656.98 = 387,905,323.84 : x - Step 2: Convert to fraction form
717,930,184.84/990,743,656.98 = 387,905,323.84/x - Step 3: Cross multiply
717,930,184.84x = 990,743,656.98 × 387,905,323.84 - Step 4: Simplify right side
717,930,184.84x = 384,314,739,105,024,448 - Step 5: Solve for x
x = 384,314,739,105,024,448/717,930,184.84 - Step 6: Final answer
x = 535,309,347.93
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1.5x scale
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.