Home / 555,146.10-766,105.33-310,130.74

Finding the Fourth Proportional to 555,146.10, 766,105.33 and 310,130.74

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Solution

The fourth proportional to 555,146.10, 766,105.33 and 310,130.74 is: 427,982.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,146.10 : 766,105.33 = 310,130.74 : x
  2. Step 2: Convert to fraction form
    555,146.10/766,105.33 = 310,130.74/x
  3. Step 3: Cross multiply
    555,146.10x = 766,105.33 × 310,130.74
  4. Step 4: Simplify right side
    555,146.10x = 237,592,812,910.84
  5. Step 5: Solve for x
    x = 237,592,812,910.84/555,146.10
  6. Step 6: Final answer
    x = 427,982.49

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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.