Home / 1,200,967.68-1,657,140.48-664,320

Finding the Fourth Proportional to 1,200,967.68, 1,657,140.48 and 664,320

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Solution

The fourth proportional to 1,200,967.68, 1,657,140.48 and 664,320 is: 916,653.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,967.68 : 1,657,140.48 = 664,320 : x
  2. Step 2: Convert to fraction form
    1,200,967.68/1,657,140.48 = 664,320/x
  3. Step 3: Cross multiply
    1,200,967.68x = 1,657,140.48 × 664,320
  4. Step 4: Simplify right side
    1,200,967.68x = 1,100,871,563,673.60
  5. Step 5: Solve for x
    x = 1,100,871,563,673.60/1,200,967.68
  6. Step 6: Final answer
    x = 916,653.78

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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.