Finding the Fourth Proportional to 808,454,447.70, 1,212,681,671.55 and 785,779,631.70
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Solution
The fourth proportional to 808,454,447.70, 1,212,681,671.55 and 785,779,631.70 is: 1,178,669,447.55
Step by Step Solution
- Step 1: Write the proportion equation
808,454,447.70 : 1,212,681,671.55 = 785,779,631.70 : x - Step 2: Convert to fraction form
808,454,447.70/1,212,681,671.55 = 785,779,631.70/x - Step 3: Cross multiply
808,454,447.70x = 1,212,681,671.55 × 785,779,631.70 - Step 4: Simplify right side
808,454,447.70x = 952,900,557,239,899,392 - Step 5: Solve for x
x = 952,900,557,239,899,392/808,454,447.70 - Step 6: Final answer
x = 1,178,669,447.55
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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.