Finding the Fourth Proportional to 1,276,813,599.99, 1,915,301,313.51 and 539,746,136.07
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Solution
The fourth proportional to 1,276,813,599.99, 1,915,301,313.51 and 539,746,136.07 is: 809,653,408.59
Step by Step Solution
- Step 1: Write the proportion equation
1,276,813,599.99 : 1,915,301,313.51 = 539,746,136.07 : x - Step 2: Convert to fraction form
1,276,813,599.99/1,915,301,313.51 = 539,746,136.07/x - Step 3: Cross multiply
1,276,813,599.99x = 1,915,301,313.51 × 539,746,136.07 - Step 4: Simplify right side
1,276,813,599.99x = 1,033,776,483,367,241,728 - Step 5: Solve for x
x = 1,033,776,483,367,241,728/1,276,813,599.99 - Step 6: Final answer
x = 809,653,408.59
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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.