Finding the Fourth Proportional to 1,121,343,710.18, 1,547,470,555.36 and 619,564,038.62
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Solution
The fourth proportional to 1,121,343,710.18, 1,547,470,555.36 and 619,564,038.62 is: 855,007,343.61
Step by Step Solution
- Step 1: Write the proportion equation
1,121,343,710.18 : 1,547,470,555.36 = 619,564,038.62 : x - Step 2: Convert to fraction form
1,121,343,710.18/1,547,470,555.36 = 619,564,038.62/x - Step 3: Cross multiply
1,121,343,710.18x = 1,547,470,555.36 × 619,564,038.62 - Step 4: Simplify right side
1,121,343,710.18x = 958,757,106,915,089,664 - Step 5: Solve for x
x = 958,757,106,915,089,664/1,121,343,710.18 - Step 6: Final answer
x = 855,007,343.61
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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.