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Finding the Fourth Proportional to 607,508.40, 911,262.60 and 430,215.60

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Solution

The fourth proportional to 607,508.40, 911,262.60 and 430,215.60 is: 645,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,508.40 : 911,262.60 = 430,215.60 : x
  2. Step 2: Convert to fraction form
    607,508.40/911,262.60 = 430,215.60/x
  3. Step 3: Cross multiply
    607,508.40x = 911,262.60 × 430,215.60
  4. Step 4: Simplify right side
    607,508.40x = 392,039,386,216.56
  5. Step 5: Solve for x
    x = 392,039,386,216.56/607,508.40
  6. Step 6: Final answer
    x = 645,323.40

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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.