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Finding the Fourth Proportional to 607,506.40, 911,259.60 and 406,739.80

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Solution

The fourth proportional to 607,506.40, 911,259.60 and 406,739.80 is: 610,109.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,506.40 : 911,259.60 = 406,739.80 : x
  2. Step 2: Convert to fraction form
    607,506.40/911,259.60 = 406,739.80/x
  3. Step 3: Cross multiply
    607,506.40x = 911,259.60 × 406,739.80
  4. Step 4: Simplify right side
    607,506.40x = 370,645,547,452.08
  5. Step 5: Solve for x
    x = 370,645,547,452.08/607,506.40
  6. Step 6: Final answer
    x = 610,109.70

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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.