Home / 1,230,666.75-1,698,405.30-686,908.35

Finding the Fourth Proportional to 1,230,666.75, 1,698,405.30 and 686,908.35

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Solution

The fourth proportional to 1,230,666.75, 1,698,405.30 and 686,908.35 is: 947,981.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,666.75 : 1,698,405.30 = 686,908.35 : x
  2. Step 2: Convert to fraction form
    1,230,666.75/1,698,405.30 = 686,908.35/x
  3. Step 3: Cross multiply
    1,230,666.75x = 1,698,405.30 × 686,908.35
  4. Step 4: Simplify right side
    1,230,666.75x = 1,166,648,782,254.25
  5. Step 5: Solve for x
    x = 1,166,648,782,254.25/1,230,666.75
  6. Step 6: Final answer
    x = 947,981.07

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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.