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Finding the Fourth Proportional to 536,646.40, 804,969.60 and 387,930.40

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Solution

The fourth proportional to 536,646.40, 804,969.60 and 387,930.40 is: 581,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,646.40 : 804,969.60 = 387,930.40 : x
  2. Step 2: Convert to fraction form
    536,646.40/804,969.60 = 387,930.40/x
  3. Step 3: Cross multiply
    536,646.40x = 804,969.60 × 387,930.40
  4. Step 4: Simplify right side
    536,646.40x = 312,272,178,915.84
  5. Step 5: Solve for x
    x = 312,272,178,915.84/536,646.40
  6. Step 6: Final answer
    x = 581,895.60

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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.