Home / 1,139,303.80-1,572,208.14-629,988.76

Finding the Fourth Proportional to 1,139,303.80, 1,572,208.14 and 629,988.76

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Solution

The fourth proportional to 1,139,303.80, 1,572,208.14 and 629,988.76 is: 869,367.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,303.80 : 1,572,208.14 = 629,988.76 : x
  2. Step 2: Convert to fraction form
    1,139,303.80/1,572,208.14 = 629,988.76/x
  3. Step 3: Cross multiply
    1,139,303.80x = 1,572,208.14 × 629,988.76
  4. Step 4: Simplify right side
    1,139,303.80x = 990,473,456,580.51
  5. Step 5: Solve for x
    x = 990,473,456,580.51/1,139,303.80
  6. Step 6: Final answer
    x = 869,367.29

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Double scale
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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.