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Finding the Fourth Proportional to 607,507.40, 911,261.10 and 406,740.80

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Solution

The fourth proportional to 607,507.40, 911,261.10 and 406,740.80 is: 610,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,507.40 : 911,261.10 = 406,740.80 : x
  2. Step 2: Convert to fraction form
    607,507.40/911,261.10 = 406,740.80/x
  3. Step 3: Cross multiply
    607,507.40x = 911,261.10 × 406,740.80
  4. Step 4: Simplify right side
    607,507.40x = 370,647,068,822.88
  5. Step 5: Solve for x
    x = 370,647,068,822.88/607,507.40
  6. Step 6: Final answer
    x = 610,111.20

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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.