Finding the Fourth Proportional to 717,869,145.64, 990,660,121.86 and 387,844,547.08
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Solution
The fourth proportional to 717,869,145.64, 990,660,121.86 and 387,844,547.08 is: 535,225,853.63
Step by Step Solution
- Step 1: Write the proportion equation
717,869,145.64 : 990,660,121.86 = 387,844,547.08 : x - Step 2: Convert to fraction form
717,869,145.64/990,660,121.86 = 387,844,547.08/x - Step 3: Cross multiply
717,869,145.64x = 990,660,121.86 × 387,844,547.08 - Step 4: Simplify right side
717,869,145.64x = 384,222,126,273,009,280 - Step 5: Solve for x
x = 384,222,126,273,009,280/717,869,145.64 - Step 6: Final answer
x = 535,225,853.63
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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.