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Finding the Fourth Proportional to 607,038.40, 911,108.40 and 307,727.20

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Solution

The fourth proportional to 607,038.40, 911,108.40 and 307,727.20 is: 461,870.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,038.40 : 911,108.40 = 307,727.20 : x
  2. Step 2: Convert to fraction form
    607,038.40/911,108.40 = 307,727.20/x
  3. Step 3: Cross multiply
    607,038.40x = 911,108.40 × 307,727.20
  4. Step 4: Simplify right side
    607,038.40x = 280,372,836,828.48
  5. Step 5: Solve for x
    x = 280,372,836,828.48/607,038.40
  6. Step 6: Final answer
    x = 461,870.02

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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.