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Finding the Fourth Proportional to 554,472.90, 831,709.35 and 402,913.80

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Solution

The fourth proportional to 554,472.90, 831,709.35 and 402,913.80 is: 604,370.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,472.90 : 831,709.35 = 402,913.80 : x
  2. Step 2: Convert to fraction form
    554,472.90/831,709.35 = 402,913.80/x
  3. Step 3: Cross multiply
    554,472.90x = 831,709.35 × 402,913.80
  4. Step 4: Simplify right side
    554,472.90x = 335,107,174,704.03
  5. Step 5: Solve for x
    x = 335,107,174,704.03/554,472.90
  6. Step 6: Final answer
    x = 604,370.70

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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.