Finding the Fourth Proportional to 690,624,195.10, 1,035,936,292.65 and 686,593,116.70
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Solution
The fourth proportional to 690,624,195.10, 1,035,936,292.65 and 686,593,116.70 is: 1,029,889,675.05
Step by Step Solution
- Step 1: Write the proportion equation
690,624,195.10 : 1,035,936,292.65 = 686,593,116.70 : x - Step 2: Convert to fraction form
690,624,195.10/1,035,936,292.65 = 686,593,116.70/x - Step 3: Cross multiply
690,624,195.10x = 1,035,936,292.65 × 686,593,116.70 - Step 4: Simplify right side
690,624,195.10x = 711,266,727,873,206,784 - Step 5: Solve for x
x = 711,266,727,873,206,784/690,624,195.10 - Step 6: Final answer
x = 1,029,889,675.05
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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.