Home / 1,215,885.43-1,678,008.77-672,009.51

Finding the Fourth Proportional to 1,215,885.43, 1,678,008.77 and 672,009.51

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Solution

The fourth proportional to 1,215,885.43, 1,678,008.77 and 672,009.51 is: 927,421.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,885.43 : 1,678,008.77 = 672,009.51 : x
  2. Step 2: Convert to fraction form
    1,215,885.43/1,678,008.77 = 672,009.51/x
  3. Step 3: Cross multiply
    1,215,885.43x = 1,678,008.77 × 672,009.51
  4. Step 4: Simplify right side
    1,215,885.43x = 1,127,637,851,303.40
  5. Step 5: Solve for x
    x = 1,127,637,851,303.40/1,215,885.43
  6. Step 6: Final answer
    x = 927,421.14

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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.