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Finding the Fourth Proportional to 598,642.20, 899,000.10 and 318,706.20

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Solution

The fourth proportional to 598,642.20, 899,000.10 and 318,706.20 is: 478,611.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,642.20 : 899,000.10 = 318,706.20 : x
  2. Step 2: Convert to fraction form
    598,642.20/899,000.10 = 318,706.20/x
  3. Step 3: Cross multiply
    598,642.20x = 899,000.10 × 318,706.20
  4. Step 4: Simplify right side
    598,642.20x = 286,516,905,670.62
  5. Step 5: Solve for x
    x = 286,516,905,670.62/598,642.20
  6. Step 6: Final answer
    x = 478,611.27

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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.