Finding the Fourth Proportional to 1,125,441,515.79, 1,553,118,410.87 and 623,658,681.13
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Solution
The fourth proportional to 1,125,441,515.79, 1,553,118,410.87 and 623,658,681.13 is: 860,654,033.26
Step by Step Solution
- Step 1: Write the proportion equation
1,125,441,515.79 : 1,553,118,410.87 = 623,658,681.13 : x - Step 2: Convert to fraction form
1,125,441,515.79/1,553,118,410.87 = 623,658,681.13/x - Step 3: Cross multiply
1,125,441,515.79x = 1,553,118,410.87 × 623,658,681.13 - Step 4: Simplify right side
1,125,441,515.79x = 968,615,779,761,905,536 - Step 5: Solve for x
x = 968,615,779,761,905,536/1,125,441,515.79 - Step 6: Final answer
x = 860,654,033.26
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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.