Finding the Fourth Proportional to 1,128,547.12, 1,557,390.74 and 619,258
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Solution
The fourth proportional to 1,128,547.12, 1,557,390.74 and 619,258 is: 854,573.69
Step by Step Solution
- Step 1: Write the proportion equation
1,128,547.12 : 1,557,390.74 = 619,258 : x - Step 2: Convert to fraction form
1,128,547.12/1,557,390.74 = 619,258/x - Step 3: Cross multiply
1,128,547.12x = 1,557,390.74 × 619,258 - Step 4: Simplify right side
1,128,547.12x = 964,426,674,870.92 - Step 5: Solve for x
x = 964,426,674,870.92/1,128,547.12 - Step 6: Final answer
x = 854,573.69
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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.