Home / 1,069,143.09-1,475,417.28-639,423.24

Finding the Fourth Proportional to 1,069,143.09, 1,475,417.28 and 639,423.24

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Solution

The fourth proportional to 1,069,143.09, 1,475,417.28 and 639,423.24 is: 882,403.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,143.09 : 1,475,417.28 = 639,423.24 : x
  2. Step 2: Convert to fraction form
    1,069,143.09/1,475,417.28 = 639,423.24/x
  3. Step 3: Cross multiply
    1,069,143.09x = 1,475,417.28 × 639,423.24
  4. Step 4: Simplify right side
    1,069,143.09x = 943,416,097,529.59
  5. Step 5: Solve for x
    x = 943,416,097,529.59/1,069,143.09
  6. Step 6: Final answer
    x = 882,403.96

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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.