Home / 1,200,392.34-1,656,480.02-656,422.40

Finding the Fourth Proportional to 1,200,392.34, 1,656,480.02 and 656,422.40

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Solution

The fourth proportional to 1,200,392.34, 1,656,480.02 and 656,422.40 is: 905,829.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,392.34 : 1,656,480.02 = 656,422.40 : x
  2. Step 2: Convert to fraction form
    1,200,392.34/1,656,480.02 = 656,422.40/x
  3. Step 3: Cross multiply
    1,200,392.34x = 1,656,480.02 × 656,422.40
  4. Step 4: Simplify right side
    1,200,392.34x = 1,087,350,578,715.94
  5. Step 5: Solve for x
    x = 1,087,350,578,715.94/1,200,392.34
  6. Step 6: Final answer
    x = 905,829.32

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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.