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Finding the Fourth Proportional to 607,865.40, 911,798.10 and 270,905.40

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Solution

The fourth proportional to 607,865.40, 911,798.10 and 270,905.40 is: 406,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,865.40 : 911,798.10 = 270,905.40 : x
  2. Step 2: Convert to fraction form
    607,865.40/911,798.10 = 270,905.40/x
  3. Step 3: Cross multiply
    607,865.40x = 911,798.10 × 270,905.40
  4. Step 4: Simplify right side
    607,865.40x = 247,011,028,999.74
  5. Step 5: Solve for x
    x = 247,011,028,999.74/607,865.40
  6. Step 6: Final answer
    x = 406,358.10

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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.