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Finding the Fourth Proportional to 425,400.60, 637,323.30 and 346,085.40

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Solution

The fourth proportional to 425,400.60, 637,323.30 and 346,085.40 is: 518,495.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,400.60 : 637,323.30 = 346,085.40 : x
  2. Step 2: Convert to fraction form
    425,400.60/637,323.30 = 346,085.40/x
  3. Step 3: Cross multiply
    425,400.60x = 637,323.30 × 346,085.40
  4. Step 4: Simplify right side
    425,400.60x = 220,568,289,209.82
  5. Step 5: Solve for x
    x = 220,568,289,209.82/425,400.60
  6. Step 6: Final answer
    x = 518,495.48

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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.