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Finding the Fourth Proportional to 425,632.60, 637,671.30 and 346,317.40

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Solution

The fourth proportional to 425,632.60, 637,671.30 and 346,317.40 is: 518,843.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,632.60 : 637,671.30 = 346,317.40 : x
  2. Step 2: Convert to fraction form
    425,632.60/637,671.30 = 346,317.40/x
  3. Step 3: Cross multiply
    425,632.60x = 637,671.30 × 346,317.40
  4. Step 4: Simplify right side
    425,632.60x = 220,836,666,670.62
  5. Step 5: Solve for x
    x = 220,836,666,670.62/425,632.60
  6. Step 6: Final answer
    x = 518,843.40

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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.