Finding the Fourth Proportional to 1,283,712,365.80, 1,771,530,135.78 and 697,001,501.80
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Solution
The fourth proportional to 1,283,712,365.80, 1,771,530,135.78 and 697,001,501.80 is: 961,865,911.72
Step by Step Solution
- Step 1: Write the proportion equation
1,283,712,365.80 : 1,771,530,135.78 = 697,001,501.80 : x - Step 2: Convert to fraction form
1,283,712,365.80/1,771,530,135.78 = 697,001,501.80/x - Step 3: Cross multiply
1,283,712,365.80x = 1,771,530,135.78 × 697,001,501.80 - Step 4: Simplify right side
1,283,712,365.80x = 1,234,759,165,122,617,856 - Step 5: Solve for x
x = 1,234,759,165,122,617,856/1,283,712,365.80 - Step 6: Final answer
x = 961,865,911.72
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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.