Home / 1,223,288.63-1,688,138.30-686,744.63

Finding the Fourth Proportional to 1,223,288.63, 1,688,138.30 and 686,744.63

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Solution

The fourth proportional to 1,223,288.63, 1,688,138.30 and 686,744.63 is: 947,707.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,288.63 : 1,688,138.30 = 686,744.63 : x
  2. Step 2: Convert to fraction form
    1,223,288.63/1,688,138.30 = 686,744.63/x
  3. Step 3: Cross multiply
    1,223,288.63x = 1,688,138.30 × 686,744.63
  4. Step 4: Simplify right side
    1,223,288.63x = 1,159,319,905,498.50
  5. Step 5: Solve for x
    x = 1,159,319,905,498.50/1,223,288.63
  6. Step 6: Final answer
    x = 947,707.58

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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.