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Finding the Fourth Proportional to 493,528.80, 740,638.80 and 316,466.40

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Solution

The fourth proportional to 493,528.80, 740,638.80 and 316,466.40 is: 474,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,528.80 : 740,638.80 = 316,466.40 : x
  2. Step 2: Convert to fraction form
    493,528.80/740,638.80 = 316,466.40/x
  3. Step 3: Cross multiply
    493,528.80x = 740,638.80 × 316,466.40
  4. Step 4: Simplify right side
    493,528.80x = 234,387,294,736.32
  5. Step 5: Solve for x
    x = 234,387,294,736.32/493,528.80
  6. Step 6: Final answer
    x = 474,921.21

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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.