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Finding the Fourth Proportional to 385,325.40, 577,988.10 and 348,000.60

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Solution

The fourth proportional to 385,325.40, 577,988.10 and 348,000.60 is: 522,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,325.40 : 577,988.10 = 348,000.60 : x
  2. Step 2: Convert to fraction form
    385,325.40/577,988.10 = 348,000.60/x
  3. Step 3: Cross multiply
    385,325.40x = 577,988.10 × 348,000.60
  4. Step 4: Simplify right side
    385,325.40x = 201,140,205,592.86
  5. Step 5: Solve for x
    x = 201,140,205,592.86/385,325.40
  6. Step 6: Final answer
    x = 522,000.90

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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.