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Finding the Fourth Proportional to 480,547.12, 662,391.60 and 378,410.56

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Solution

The fourth proportional to 480,547.12, 662,391.60 and 378,410.56 is: 521,605.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,547.12 : 662,391.60 = 378,410.56 : x
  2. Step 2: Convert to fraction form
    480,547.12/662,391.60 = 378,410.56/x
  3. Step 3: Cross multiply
    480,547.12x = 662,391.60 × 378,410.56
  4. Step 4: Simplify right side
    480,547.12x = 250,655,976,295.30
  5. Step 5: Solve for x
    x = 250,655,976,295.30/480,547.12
  6. Step 6: Final answer
    x = 521,605.41

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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.