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Finding the Fourth Proportional to 423,000.20, 634,500.30 and 403,317.20

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Solution

The fourth proportional to 423,000.20, 634,500.30 and 403,317.20 is: 604,975.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,000.20 : 634,500.30 = 403,317.20 : x
  2. Step 2: Convert to fraction form
    423,000.20/634,500.30 = 403,317.20/x
  3. Step 3: Cross multiply
    423,000.20x = 634,500.30 × 403,317.20
  4. Step 4: Simplify right side
    423,000.20x = 255,904,884,395.16
  5. Step 5: Solve for x
    x = 255,904,884,395.16/423,000.20
  6. Step 6: Final answer
    x = 604,975.80

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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.