Finding the Fourth Proportional to 1,368,646,876.92, 1,888,769,828.28 and 774,020,281.20
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Solution
The fourth proportional to 1,368,646,876.92, 1,888,769,828.28 and 774,020,281.20 is: 1,068,168,991.04
Step by Step Solution
- Step 1: Write the proportion equation
1,368,646,876.92 : 1,888,769,828.28 = 774,020,281.20 : x - Step 2: Convert to fraction form
1,368,646,876.92/1,888,769,828.28 = 774,020,281.20/x - Step 3: Cross multiply
1,368,646,876.92x = 1,888,769,828.28 × 774,020,281.20 - Step 4: Simplify right side
1,368,646,876.92x = 1,461,946,153,607,361,280 - Step 5: Solve for x
x = 1,461,946,153,607,361,280/1,368,646,876.92 - Step 6: Final answer
x = 1,068,168,991.04
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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.