Finding the Fourth Proportional to 1,213,643,811.60, 1,817,386,421.40 and 667,768,611.60
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Solution
The fourth proportional to 1,213,643,811.60, 1,817,386,421.40 and 667,768,611.60 is: 999,958,633.46
Step by Step Solution
- Step 1: Write the proportion equation
1,213,643,811.60 : 1,817,386,421.40 = 667,768,611.60 : x - Step 2: Convert to fraction form
1,213,643,811.60/1,817,386,421.40 = 667,768,611.60/x - Step 3: Cross multiply
1,213,643,811.60x = 1,817,386,421.40 × 667,768,611.60 - Step 4: Simplify right side
1,213,643,811.60x = 1,213,593,607,358,970,624 - Step 5: Solve for x
x = 1,213,593,607,358,970,624/1,213,643,811.60 - Step 6: Final answer
x = 999,958,633.46
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.