Finding the Fourth Proportional to 918,429,401.68, 1,267,396,068.10 and 542,207,177.36
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Solution
The fourth proportional to 918,429,401.68, 1,267,396,068.10 and 542,207,177.36 is: 748,224,352.82
Step by Step Solution
- Step 1: Write the proportion equation
918,429,401.68 : 1,267,396,068.10 = 542,207,177.36 : x - Step 2: Convert to fraction form
918,429,401.68/1,267,396,068.10 = 542,207,177.36/x - Step 3: Cross multiply
918,429,401.68x = 1,267,396,068.10 × 542,207,177.36 - Step 4: Simplify right side
918,429,401.68x = 687,191,244,681,663,360 - Step 5: Solve for x
x = 687,191,244,681,663,360/918,429,401.68 - Step 6: Final answer
x = 748,224,352.82
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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.