Finding the Fourth Proportional to 689,220,814.92, 951,130,794.69 and 375,956,422.08
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Solution
The fourth proportional to 689,220,814.92, 951,130,794.69 and 375,956,422.08 is: 518,823,173.59
Step by Step Solution
- Step 1: Write the proportion equation
689,220,814.92 : 951,130,794.69 = 375,956,422.08 : x - Step 2: Convert to fraction form
689,220,814.92/951,130,794.69 = 375,956,422.08/x - Step 3: Cross multiply
689,220,814.92x = 951,130,794.69 × 375,956,422.08 - Step 4: Simplify right side
689,220,814.92x = 357,583,730,501,759,488 - Step 5: Solve for x
x = 357,583,730,501,759,488/689,220,814.92 - Step 6: Final answer
x = 518,823,173.59
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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.