Finding the Fourth Proportional to 704,513,401.99, 972,201,859.54 and 391,267,794.12
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Solution
The fourth proportional to 704,513,401.99, 972,201,859.54 and 391,267,794.12 is: 539,934,763.40
Step by Step Solution
- Step 1: Write the proportion equation
704,513,401.99 : 972,201,859.54 = 391,267,794.12 : x - Step 2: Convert to fraction form
704,513,401.99/972,201,859.54 = 391,267,794.12/x - Step 3: Cross multiply
704,513,401.99x = 972,201,859.54 × 391,267,794.12 - Step 4: Simplify right side
704,513,401.99x = 380,391,277,019,152,896 - Step 5: Solve for x
x = 380,391,277,019,152,896/704,513,401.99 - Step 6: Final answer
x = 539,934,763.40
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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.