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Finding the Fourth Proportional to 607,211.80, 911,400.90 and 308,030.20

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Solution

The fourth proportional to 607,211.80, 911,400.90 and 308,030.20 is: 462,341.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,211.80 : 911,400.90 = 308,030.20 : x
  2. Step 2: Convert to fraction form
    607,211.80/911,400.90 = 308,030.20/x
  3. Step 3: Cross multiply
    607,211.80x = 911,400.90 × 308,030.20
  4. Step 4: Simplify right side
    607,211.80x = 280,739,001,507.18
  5. Step 5: Solve for x
    x = 280,739,001,507.18/607,211.80
  6. Step 6: Final answer
    x = 462,341.15

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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.