Home / 674,987.30-931,568.16-384,703.21

Finding the Fourth Proportional to 674,987.30, 931,568.16 and 384,703.21

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Solution

The fourth proportional to 674,987.30, 931,568.16 and 384,703.21 is: 530,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,987.30 : 931,568.16 = 384,703.21 : x
  2. Step 2: Convert to fraction form
    674,987.30/931,568.16 = 384,703.21/x
  3. Step 3: Cross multiply
    674,987.30x = 931,568.16 × 384,703.21
  4. Step 4: Simplify right side
    674,987.30x = 358,377,261,928.94
  5. Step 5: Solve for x
    x = 358,377,261,928.94/674,987.30
  6. Step 6: Final answer
    x = 530,939.27

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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.