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Finding the Fourth Proportional to 528,086.90, 790,818.15 and 423,110.90

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Solution

The fourth proportional to 528,086.90, 790,818.15 and 423,110.90 is: 633,615.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,086.90 : 790,818.15 = 423,110.90 : x
  2. Step 2: Convert to fraction form
    528,086.90/790,818.15 = 423,110.90/x
  3. Step 3: Cross multiply
    528,086.90x = 790,818.15 × 423,110.90
  4. Step 4: Simplify right side
    528,086.90x = 334,603,779,182.84
  5. Step 5: Solve for x
    x = 334,603,779,182.84/528,086.90
  6. Step 6: Final answer
    x = 633,615.00

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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.