Home / 717,870.40-1,076,805.60-451,931.20

Finding the Fourth Proportional to 717,870.40, 1,076,805.60 and 451,931.20

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Solution

The fourth proportional to 717,870.40, 1,076,805.60 and 451,931.20 is: 677,896.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,870.40 : 1,076,805.60 = 451,931.20 : x
  2. Step 2: Convert to fraction form
    717,870.40/1,076,805.60 = 451,931.20/x
  3. Step 3: Cross multiply
    717,870.40x = 1,076,805.60 × 451,931.20
  4. Step 4: Simplify right side
    717,870.40x = 486,642,046,974.72
  5. Step 5: Solve for x
    x = 486,642,046,974.72/717,870.40
  6. Step 6: Final answer
    x = 677,896.80

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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.