Finding the Fourth Proportional to 478,464,356.80, 717,696,535.20 and 294,798,347.20
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Solution
The fourth proportional to 478,464,356.80, 717,696,535.20 and 294,798,347.20 is: 442,197,520.80
Step by Step Solution
- Step 1: Write the proportion equation
478,464,356.80 : 717,696,535.20 = 294,798,347.20 : x - Step 2: Convert to fraction form
478,464,356.80/717,696,535.20 = 294,798,347.20/x - Step 3: Cross multiply
478,464,356.80x = 717,696,535.20 × 294,798,347.20 - Step 4: Simplify right side
478,464,356.80x = 211,575,752,368,126,624 - Step 5: Solve for x
x = 211,575,752,368,126,624/478,464,356.80 - Step 6: Final answer
x = 442,197,520.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.