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Finding the Fourth Proportional to 553,430, 763,902.76 and 324,041.06

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Solution

The fourth proportional to 553,430, 763,902.76 and 324,041.06 is: 447,275.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,430 : 763,902.76 = 324,041.06 : x
  2. Step 2: Convert to fraction form
    553,430/763,902.76 = 324,041.06/x
  3. Step 3: Cross multiply
    553,430x = 763,902.76 × 324,041.06
  4. Step 4: Simplify right side
    553,430x = 247,535,860,087.33
  5. Step 5: Solve for x
    x = 247,535,860,087.33/553,430
  6. Step 6: Final answer
    x = 447,275.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.