Finding the Fourth Proportional to 1,313,480,828.70, 1,812,603,686.49 and 718,765,439.40
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Solution
The fourth proportional to 1,313,480,828.70, 1,812,603,686.49 and 718,765,439.40 is: 991,896,384.56
Step by Step Solution
- Step 1: Write the proportion equation
1,313,480,828.70 : 1,812,603,686.49 = 718,765,439.40 : x - Step 2: Convert to fraction form
1,313,480,828.70/1,812,603,686.49 = 718,765,439.40/x - Step 3: Cross multiply
1,313,480,828.70x = 1,812,603,686.49 × 718,765,439.40 - Step 4: Simplify right side
1,313,480,828.70x = 1,302,836,885,178,044,672 - Step 5: Solve for x
x = 1,302,836,885,178,044,672/1,313,480,828.70 - Step 6: Final answer
x = 991,896,384.56
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.