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Finding the Fourth Proportional to 527,342.40, 790,664.16 and 290,798.40

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Solution

The fourth proportional to 527,342.40, 790,664.16 and 290,798.40 is: 436,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,342.40 : 790,664.16 = 290,798.40 : x
  2. Step 2: Convert to fraction form
    527,342.40/790,664.16 = 290,798.40/x
  3. Step 3: Cross multiply
    527,342.40x = 790,664.16 × 290,798.40
  4. Step 4: Simplify right side
    527,342.40x = 229,923,872,665.34
  5. Step 5: Solve for x
    x = 229,923,872,665.34/527,342.40
  6. Step 6: Final answer
    x = 436,004.90

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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.