Finding the Fourth Proportional to 1,539,778,839.10, 2,309,668,258.65 and 927,558,807.10
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Solution
The fourth proportional to 1,539,778,839.10, 2,309,668,258.65 and 927,558,807.10 is: 1,391,338,210.65
Step by Step Solution
- Step 1: Write the proportion equation
1,539,778,839.10 : 2,309,668,258.65 = 927,558,807.10 : x - Step 2: Convert to fraction form
1,539,778,839.10/2,309,668,258.65 = 927,558,807.10/x - Step 3: Cross multiply
1,539,778,839.10x = 2,309,668,258.65 × 927,558,807.10 - Step 4: Simplify right side
1,539,778,839.10x = 2,142,353,134,790,128,384 - Step 5: Solve for x
x = 2,142,353,134,790,128,384/1,539,778,839.10 - Step 6: Final answer
x = 1,391,338,210.65
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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.