Finding the Fourth Proportional to 1,118,627,977.99, 1,678,009,225.58 and 342,280,364.76
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Solution
The fourth proportional to 1,118,627,977.99, 1,678,009,225.58 and 342,280,364.76 is: 513,441,127.08
Step by Step Solution
- Step 1: Write the proportion equation
1,118,627,977.99 : 1,678,009,225.58 = 342,280,364.76 : x - Step 2: Convert to fraction form
1,118,627,977.99/1,678,009,225.58 = 342,280,364.76/x - Step 3: Cross multiply
1,118,627,977.99x = 1,678,009,225.58 × 342,280,364.76 - Step 4: Simplify right side
1,118,627,977.99x = 574,349,609,802,167,488 - Step 5: Solve for x
x = 574,349,609,802,167,488/1,118,627,977.99 - Step 6: Final answer
x = 513,441,127.08
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1.5x scale
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.