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Finding the Fourth Proportional to 425,630.10, 637,667.55 and 346,314.90

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Solution

The fourth proportional to 425,630.10, 637,667.55 and 346,314.90 is: 518,839.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,630.10 : 637,667.55 = 346,314.90 : x
  2. Step 2: Convert to fraction form
    425,630.10/637,667.55 = 346,314.90/x
  3. Step 3: Cross multiply
    425,630.10x = 637,667.55 × 346,314.90
  4. Step 4: Simplify right side
    425,630.10x = 220,833,773,811.50
  5. Step 5: Solve for x
    x = 220,833,773,811.50/425,630.10
  6. Step 6: Final answer
    x = 518,839.65

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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.