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Finding the Fourth Proportional to 620,369.40, 928,998.90 and 495,953.40

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Solution

The fourth proportional to 620,369.40, 928,998.90 and 495,953.40 is: 742,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,369.40 : 928,998.90 = 495,953.40 : x
  2. Step 2: Convert to fraction form
    620,369.40/928,998.90 = 495,953.40/x
  3. Step 3: Cross multiply
    620,369.40x = 928,998.90 × 495,953.40
  4. Step 4: Simplify right side
    620,369.40x = 460,740,163,051.26
  5. Step 5: Solve for x
    x = 460,740,163,051.26/620,369.40
  6. Step 6: Final answer
    x = 742,686.80

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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.