Home / 817,207.61-1,128,302.07-511,407.62

Finding the Fourth Proportional to 817,207.61, 1,128,302.07 and 511,407.62

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Solution

The fourth proportional to 817,207.61, 1,128,302.07 and 511,407.62 is: 706,090.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,207.61 : 1,128,302.07 = 511,407.62 : x
  2. Step 2: Convert to fraction form
    817,207.61/1,128,302.07 = 511,407.62/x
  3. Step 3: Cross multiply
    817,207.61x = 1,128,302.07 × 511,407.62
  4. Step 4: Simplify right side
    817,207.61x = 577,022,276,259.77
  5. Step 5: Solve for x
    x = 577,022,276,259.77/817,207.61
  6. Step 6: Final answer
    x = 706,090.19

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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.