Finding the Fourth Proportional to 1,125,441,516.79, 1,553,118,412.25 and 623,658,682.13
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Solution
The fourth proportional to 1,125,441,516.79, 1,553,118,412.25 and 623,658,682.13 is: 860,654,034.64
Step by Step Solution
- Step 1: Write the proportion equation
1,125,441,516.79 : 1,553,118,412.25 = 623,658,682.13 : x - Step 2: Convert to fraction form
1,125,441,516.79/1,553,118,412.25 = 623,658,682.13/x - Step 3: Cross multiply
1,125,441,516.79x = 1,553,118,412.25 × 623,658,682.13 - Step 4: Simplify right side
1,125,441,516.79x = 968,615,782,175,673,088 - Step 5: Solve for x
x = 968,615,782,175,673,088/1,125,441,516.79 - Step 6: Final answer
x = 860,654,034.64
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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.