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Finding the Fourth Proportional to 648,791.55, 973,186.92 and 472,420.53

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Solution

The fourth proportional to 648,791.55, 973,186.92 and 472,420.53 is: 708,630.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,791.55 : 973,186.92 = 472,420.53 : x
  2. Step 2: Convert to fraction form
    648,791.55/973,186.92 = 472,420.53/x
  3. Step 3: Cross multiply
    648,791.55x = 973,186.92 × 472,420.53
  4. Step 4: Simplify right side
    648,791.55x = 459,753,480,535.47
  5. Step 5: Solve for x
    x = 459,753,480,535.47/648,791.55
  6. Step 6: Final answer
    x = 708,630.50

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Double scale
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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.