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Finding the Fourth Proportional to 528,730.60, 790,791.90 and 472,973.80

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Solution

The fourth proportional to 528,730.60, 790,791.90 and 472,973.80 is: 707,399.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,730.60 : 790,791.90 = 472,973.80 : x
  2. Step 2: Convert to fraction form
    528,730.60/790,791.90 = 472,973.80/x
  3. Step 3: Cross multiply
    528,730.60x = 790,791.90 × 472,973.80
  4. Step 4: Simplify right side
    528,730.60x = 374,023,849,952.22
  5. Step 5: Solve for x
    x = 374,023,849,952.22/528,730.60
  6. Step 6: Final answer
    x = 707,399.67

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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.