Finding the Fourth Proportional to 877,811,718.05, 1,210,208,302.44 and 697,357,447.03
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Solution
The fourth proportional to 877,811,718.05, 1,210,208,302.44 and 697,357,447.03 is: 961,422,312.79
Step by Step Solution
- Step 1: Write the proportion equation
877,811,718.05 : 1,210,208,302.44 = 697,357,447.03 : x - Step 2: Convert to fraction form
877,811,718.05/1,210,208,302.44 = 697,357,447.03/x - Step 3: Cross multiply
877,811,718.05x = 1,210,208,302.44 × 697,357,447.03 - Step 4: Simplify right side
877,811,718.05x = 843,947,772,160,581,632 - Step 5: Solve for x
x = 843,947,772,160,581,632/877,811,718.05 - Step 6: Final answer
x = 961,422,312.79
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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.