Home / 1,230,225.80-1,697,760.76-686,409.12

Finding the Fourth Proportional to 1,230,225.80, 1,697,760.76 and 686,409.12

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Solution

The fourth proportional to 1,230,225.80, 1,697,760.76 and 686,409.12 is: 947,272.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,225.80 : 1,697,760.76 = 686,409.12 : x
  2. Step 2: Convert to fraction form
    1,230,225.80/1,697,760.76 = 686,409.12/x
  3. Step 3: Cross multiply
    1,230,225.80x = 1,697,760.76 × 686,409.12
  4. Step 4: Simplify right side
    1,230,225.80x = 1,165,358,460,753.33
  5. Step 5: Solve for x
    x = 1,165,358,460,753.33/1,230,225.80
  6. Step 6: Final answer
    x = 947,272.01

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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.