Home / 648,056.80-972,085.20-611,315.20

Finding the Fourth Proportional to 648,056.80, 972,085.20 and 611,315.20

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Solution

The fourth proportional to 648,056.80, 972,085.20 and 611,315.20 is: 916,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,056.80 : 972,085.20 = 611,315.20 : x
  2. Step 2: Convert to fraction form
    648,056.80/972,085.20 = 611,315.20/x
  3. Step 3: Cross multiply
    648,056.80x = 972,085.20 × 611,315.20
  4. Step 4: Simplify right side
    648,056.80x = 594,250,458,455.04
  5. Step 5: Solve for x
    x = 594,250,458,455.04/648,056.80
  6. Step 6: Final answer
    x = 916,972.80

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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.