Finding the Fourth Proportional to 1,314,165,701.70, 1,971,248,552.55 and 344,915,295.30
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Solution
The fourth proportional to 1,314,165,701.70, 1,971,248,552.55 and 344,915,295.30 is: 517,372,942.95
Step by Step Solution
- Step 1: Write the proportion equation
1,314,165,701.70 : 1,971,248,552.55 = 344,915,295.30 : x - Step 2: Convert to fraction form
1,314,165,701.70/1,971,248,552.55 = 344,915,295.30/x - Step 3: Cross multiply
1,314,165,701.70x = 1,971,248,552.55 × 344,915,295.30 - Step 4: Simplify right side
1,314,165,701.70x = 679,913,776,612,480,768 - Step 5: Solve for x
x = 679,913,776,612,480,768/1,314,165,701.70 - Step 6: Final answer
x = 517,372,942.95
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Double scale
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Similar ratio
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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.