Home / 1,209,532.31-1,669,121.01-686,338.22

Finding the Fourth Proportional to 1,209,532.31, 1,669,121.01 and 686,338.22

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Solution

The fourth proportional to 1,209,532.31, 1,669,121.01 and 686,338.22 is: 947,127.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,532.31 : 1,669,121.01 = 686,338.22 : x
  2. Step 2: Convert to fraction form
    1,209,532.31/1,669,121.01 = 686,338.22/x
  3. Step 3: Cross multiply
    1,209,532.31x = 1,669,121.01 × 686,338.22
  4. Step 4: Simplify right side
    1,209,532.31x = 1,145,581,547,140.80
  5. Step 5: Solve for x
    x = 1,145,581,547,140.80/1,209,532.31
  6. Step 6: Final answer
    x = 947,127.69

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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.