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Finding the Fourth Proportional to 554,378.40, 831,567.60 and 455,963.40

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Solution

The fourth proportional to 554,378.40, 831,567.60 and 455,963.40 is: 683,945.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,378.40 : 831,567.60 = 455,963.40 : x
  2. Step 2: Convert to fraction form
    554,378.40/831,567.60 = 455,963.40/x
  3. Step 3: Cross multiply
    554,378.40x = 831,567.60 × 455,963.40
  4. Step 4: Simplify right side
    554,378.40x = 379,164,390,225.84
  5. Step 5: Solve for x
    x = 379,164,390,225.84/554,378.40
  6. Step 6: Final answer
    x = 683,945.10

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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.