Home / 498,139.20-688,759.20-435,153.60

Finding the Fourth Proportional to 498,139.20, 688,759.20 and 435,153.60

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Solution

The fourth proportional to 498,139.20, 688,759.20 and 435,153.60 is: 601,671.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,139.20 : 688,759.20 = 435,153.60 : x
  2. Step 2: Convert to fraction form
    498,139.20/688,759.20 = 435,153.60/x
  3. Step 3: Cross multiply
    498,139.20x = 688,759.20 × 435,153.60
  4. Step 4: Simplify right side
    498,139.20x = 299,716,045,413.12
  5. Step 5: Solve for x
    x = 299,716,045,413.12/498,139.20
  6. Step 6: Final answer
    x = 601,671.27

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1.5x scale

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.