Home / 1,005,293.85-1,386,350.75-661,421.59

Finding the Fourth Proportional to 1,005,293.85, 1,386,350.75 and 661,421.59

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Solution

The fourth proportional to 1,005,293.85, 1,386,350.75 and 661,421.59 is: 912,133.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,293.85 : 1,386,350.75 = 661,421.59 : x
  2. Step 2: Convert to fraction form
    1,005,293.85/1,386,350.75 = 661,421.59/x
  3. Step 3: Cross multiply
    1,005,293.85x = 1,386,350.75 × 661,421.59
  4. Step 4: Simplify right side
    1,005,293.85x = 916,962,310,345.36
  5. Step 5: Solve for x
    x = 916,962,310,345.36/1,005,293.85
  6. Step 6: Final answer
    x = 912,133.61

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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.