Home / 715,130.06-986,467.15-428,484.07

Finding the Fourth Proportional to 715,130.06, 986,467.15 and 428,484.07

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Solution

The fourth proportional to 715,130.06, 986,467.15 and 428,484.07 is: 591,060.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,130.06 : 986,467.15 = 428,484.07 : x
  2. Step 2: Convert to fraction form
    715,130.06/986,467.15 = 428,484.07/x
  3. Step 3: Cross multiply
    715,130.06x = 986,467.15 × 428,484.07
  4. Step 4: Simplify right side
    715,130.06x = 422,685,459,353.30
  5. Step 5: Solve for x
    x = 422,685,459,353.30/715,130.06
  6. Step 6: Final answer
    x = 591,060.96

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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.