Finding the Fourth Proportional to 1,758,238,975.20, 2,637,358,462.80 and 723,842,212.80
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Solution
The fourth proportional to 1,758,238,975.20, 2,637,358,462.80 and 723,842,212.80 is: 1,085,763,319.20
Step by Step Solution
- Step 1: Write the proportion equation
1,758,238,975.20 : 2,637,358,462.80 = 723,842,212.80 : x - Step 2: Convert to fraction form
1,758,238,975.20/2,637,358,462.80 = 723,842,212.80/x - Step 3: Cross multiply
1,758,238,975.20x = 2,637,358,462.80 × 723,842,212.80 - Step 4: Simplify right side
1,758,238,975.20x = 1,909,031,385,659,958,528 - Step 5: Solve for x
x = 1,909,031,385,659,958,528/1,758,238,975.20 - Step 6: Final answer
x = 1,085,763,319.20
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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.