Finding the Fourth Proportional to 564,120,521.98, 778,448,383.45 and 313,211,946.99
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Solution
The fourth proportional to 564,120,521.98, 778,448,383.45 and 313,211,946.99 is: 432,211,423.47
Step by Step Solution
- Step 1: Write the proportion equation
564,120,521.98 : 778,448,383.45 = 313,211,946.99 : x - Step 2: Convert to fraction form
564,120,521.98/778,448,383.45 = 313,211,946.99/x - Step 3: Cross multiply
564,120,521.98x = 778,448,383.45 × 313,211,946.99 - Step 4: Simplify right side
564,120,521.98x = 243,819,333,811,592,608 - Step 5: Solve for x
x = 243,819,333,811,592,608/564,120,521.98 - Step 6: Final answer
x = 432,211,423.47
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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.