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Finding the Fourth Proportional to 648,018.70, 972,028.05 and 578,034.70

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Solution

The fourth proportional to 648,018.70, 972,028.05 and 578,034.70 is: 867,052.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,018.70 : 972,028.05 = 578,034.70 : x
  2. Step 2: Convert to fraction form
    648,018.70/972,028.05 = 578,034.70/x
  3. Step 3: Cross multiply
    648,018.70x = 972,028.05 × 578,034.70
  4. Step 4: Simplify right side
    648,018.70x = 561,865,942,273.34
  5. Step 5: Solve for x
    x = 561,865,942,273.34/648,018.70
  6. Step 6: Final answer
    x = 867,052.05

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Double scale
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Similar ratio
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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.