Finding the Fourth Proportional to 915,129,722.36, 1,245,984,047.68 and 912,224,068.76
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Solution
The fourth proportional to 915,129,722.36, 1,245,984,047.68 and 912,224,068.76 is: 1,242,027,889.39
Step by Step Solution
- Step 1: Write the proportion equation
915,129,722.36 : 1,245,984,047.68 = 912,224,068.76 : x - Step 2: Convert to fraction form
915,129,722.36/1,245,984,047.68 = 912,224,068.76/x - Step 3: Cross multiply
915,129,722.36x = 1,245,984,047.68 × 912,224,068.76 - Step 4: Simplify right side
915,129,722.36x = 1,136,616,637,584,703,488 - Step 5: Solve for x
x = 1,136,616,637,584,703,488/915,129,722.36 - Step 6: Final answer
x = 1,242,027,889.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.