Home / 1,223,266.50-1,688,107.77-686,722.50

Finding the Fourth Proportional to 1,223,266.50, 1,688,107.77 and 686,722.50

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Solution

The fourth proportional to 1,223,266.50, 1,688,107.77 and 686,722.50 is: 947,677.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,266.50 : 1,688,107.77 = 686,722.50 : x
  2. Step 2: Convert to fraction form
    1,223,266.50/1,688,107.77 = 686,722.50/x
  3. Step 3: Cross multiply
    1,223,266.50x = 1,688,107.77 × 686,722.50
  4. Step 4: Simplify right side
    1,223,266.50x = 1,159,261,588,083.83
  5. Step 5: Solve for x
    x = 1,159,261,588,083.83/1,223,266.50
  6. Step 6: Final answer
    x = 947,677.05

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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.