Home / 486,139.60-670,603.08-284,896.72

Finding the Fourth Proportional to 486,139.60, 670,603.08 and 284,896.72

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Solution

The fourth proportional to 486,139.60, 670,603.08 and 284,896.72 is: 392,999.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,139.60 : 670,603.08 = 284,896.72 : x
  2. Step 2: Convert to fraction form
    486,139.60/670,603.08 = 284,896.72/x
  3. Step 3: Cross multiply
    486,139.60x = 670,603.08 × 284,896.72
  4. Step 4: Simplify right side
    486,139.60x = 191,052,617,913.90
  5. Step 5: Solve for x
    x = 191,052,617,913.90/486,139.60
  6. Step 6: Final answer
    x = 392,999.50

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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.