Home / 507,669.20-761,505.48-128,589.80

Finding the Fourth Proportional to 507,669.20, 761,505.48 and 128,589.80

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Solution

The fourth proportional to 507,669.20, 761,505.48 and 128,589.80 is: 192,885.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,669.20 : 761,505.48 = 128,589.80 : x
  2. Step 2: Convert to fraction form
    507,669.20/761,505.48 = 128,589.80/x
  3. Step 3: Cross multiply
    507,669.20x = 761,505.48 × 128,589.80
  4. Step 4: Simplify right side
    507,669.20x = 97,921,837,372.10
  5. Step 5: Solve for x
    x = 97,921,837,372.10/507,669.20
  6. Step 6: Final answer
    x = 192,885.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.