Home / 648,043.80-972,065.70-578,002.20

Finding the Fourth Proportional to 648,043.80, 972,065.70 and 578,002.20

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Solution

The fourth proportional to 648,043.80, 972,065.70 and 578,002.20 is: 867,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,043.80 : 972,065.70 = 578,002.20 : x
  2. Step 2: Convert to fraction form
    648,043.80/972,065.70 = 578,002.20/x
  3. Step 3: Cross multiply
    648,043.80x = 972,065.70 × 578,002.20
  4. Step 4: Simplify right side
    648,043.80x = 561,856,113,144.54
  5. Step 5: Solve for x
    x = 561,856,113,144.54/648,043.80
  6. Step 6: Final answer
    x = 867,003.30

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Double scale
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Similar ratio
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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.