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Finding the Fourth Proportional to 660,801.65, 911,962.05 and 370,408.58

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Solution

The fourth proportional to 660,801.65, 911,962.05 and 370,408.58 is: 511,195.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,801.65 : 911,962.05 = 370,408.58 : x
  2. Step 2: Convert to fraction form
    660,801.65/911,962.05 = 370,408.58/x
  3. Step 3: Cross multiply
    660,801.65x = 911,962.05 × 370,408.58
  4. Step 4: Simplify right side
    660,801.65x = 337,798,572,812.75
  5. Step 5: Solve for x
    x = 337,798,572,812.75/660,801.65
  6. Step 6: Final answer
    x = 511,195.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.