Finding the Fourth Proportional to 1,120,160,775.08, 1,545,781,355.42 and 618,358,788.63
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Solution
The fourth proportional to 1,120,160,775.08, 1,545,781,355.42 and 618,358,788.63 is: 853,312,763.39
Step by Step Solution
- Step 1: Write the proportion equation
1,120,160,775.08 : 1,545,781,355.42 = 618,358,788.63 : x - Step 2: Convert to fraction form
1,120,160,775.08/1,545,781,355.42 = 618,358,788.63/x - Step 3: Cross multiply
1,120,160,775.08x = 1,545,781,355.42 × 618,358,788.63 - Step 4: Simplify right side
1,120,160,775.08x = 955,847,486,425,896,448 - Step 5: Solve for x
x = 955,847,486,425,896,448/1,120,160,775.08 - Step 6: Final answer
x = 853,312,763.39
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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.