Home / 986,008.74-1,479,234.64-312,130.45

Finding the Fourth Proportional to 986,008.74, 1,479,234.64 and 312,130.45

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Solution

The fourth proportional to 986,008.74, 1,479,234.64 and 312,130.45 is: 468,265.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,008.74 : 1,479,234.64 = 312,130.45 : x
  2. Step 2: Convert to fraction form
    986,008.74/1,479,234.64 = 312,130.45/x
  3. Step 3: Cross multiply
    986,008.74x = 1,479,234.64 × 312,130.45
  4. Step 4: Simplify right side
    986,008.74x = 461,714,173,838.79
  5. Step 5: Solve for x
    x = 461,714,173,838.79/986,008.74
  6. Step 6: Final answer
    x = 468,265.80

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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.