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Finding the Fourth Proportional to 634,833.84, 875,391.19 and 480,136.39

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Solution

The fourth proportional to 634,833.84, 875,391.19 and 480,136.39 is: 662,074.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,833.84 : 875,391.19 = 480,136.39 : x
  2. Step 2: Convert to fraction form
    634,833.84/875,391.19 = 480,136.39/x
  3. Step 3: Cross multiply
    634,833.84x = 875,391.19 × 480,136.39
  4. Step 4: Simplify right side
    634,833.84x = 420,307,165,804.40
  5. Step 5: Solve for x
    x = 420,307,165,804.40/634,833.84
  6. Step 6: Final answer
    x = 662,074.29

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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.