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Finding the Fourth Proportional to 521,334.24, 719,440.80 and 282,870.24

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Solution

The fourth proportional to 521,334.24, 719,440.80 and 282,870.24 is: 390,360.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,334.24 : 719,440.80 = 282,870.24 : x
  2. Step 2: Convert to fraction form
    521,334.24/719,440.80 = 282,870.24/x
  3. Step 3: Cross multiply
    521,334.24x = 719,440.80 × 282,870.24
  4. Step 4: Simplify right side
    521,334.24x = 203,508,391,761.79
  5. Step 5: Solve for x
    x = 203,508,391,761.79/521,334.24
  6. Step 6: Final answer
    x = 390,360.69

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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.