Home / 1,223,988.30-1,688,400.36-764,304.84

Finding the Fourth Proportional to 1,223,988.30, 1,688,400.36 and 764,304.84

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Solution

The fourth proportional to 1,223,988.30, 1,688,400.36 and 764,304.84 is: 1,054,301.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,988.30 : 1,688,400.36 = 764,304.84 : x
  2. Step 2: Convert to fraction form
    1,223,988.30/1,688,400.36 = 764,304.84/x
  3. Step 3: Cross multiply
    1,223,988.30x = 1,688,400.36 × 764,304.84
  4. Step 4: Simplify right side
    1,223,988.30x = 1,290,452,567,005.74
  5. Step 5: Solve for x
    x = 1,290,452,567,005.74/1,223,988.30
  6. Step 6: Final answer
    x = 1,054,301.39

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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.