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Finding the Fourth Proportional to 553,345.70, 830,018.55 and 548,680.10

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Solution

The fourth proportional to 553,345.70, 830,018.55 and 548,680.10 is: 823,020.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,345.70 : 830,018.55 = 548,680.10 : x
  2. Step 2: Convert to fraction form
    553,345.70/830,018.55 = 548,680.10/x
  3. Step 3: Cross multiply
    553,345.70x = 830,018.55 × 548,680.10
  4. Step 4: Simplify right side
    553,345.70x = 455,414,661,015.86
  5. Step 5: Solve for x
    x = 455,414,661,015.86/553,345.70
  6. Step 6: Final answer
    x = 823,020.15

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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.