Finding the Fourth Proportional to 689,535,517.35, 951,579,202.14 and 376,289,921.79
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Solution
The fourth proportional to 689,535,517.35, 951,579,202.14 and 376,289,921.79 is: 519,291,109.07
Step by Step Solution
- Step 1: Write the proportion equation
689,535,517.35 : 951,579,202.14 = 376,289,921.79 : x - Step 2: Convert to fraction form
689,535,517.35/951,579,202.14 = 376,289,921.79/x - Step 3: Cross multiply
689,535,517.35x = 951,579,202.14 × 376,289,921.79 - Step 4: Simplify right side
689,535,517.35x = 358,069,663,550,251,200 - Step 5: Solve for x
x = 358,069,663,550,251,200/689,535,517.35 - Step 6: Final answer
x = 519,291,109.07
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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.