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Finding the Fourth Proportional to 608,628.40, 912,942.60 and 372,432.40

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Solution

The fourth proportional to 608,628.40, 912,942.60 and 372,432.40 is: 558,648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,628.40 : 912,942.60 = 372,432.40 : x
  2. Step 2: Convert to fraction form
    608,628.40/912,942.60 = 372,432.40/x
  3. Step 3: Cross multiply
    608,628.40x = 912,942.60 × 372,432.40
  4. Step 4: Simplify right side
    608,628.40x = 340,009,403,580.24
  5. Step 5: Solve for x
    x = 340,009,403,580.24/608,628.40
  6. Step 6: Final answer
    x = 558,648.60

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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.