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Finding the Fourth Proportional to 451,483.71, 623,126.88 and 342,947.49

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Solution

The fourth proportional to 451,483.71, 623,126.88 and 342,947.49 is: 473,327.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,483.71 : 623,126.88 = 342,947.49 : x
  2. Step 2: Convert to fraction form
    451,483.71/623,126.88 = 342,947.49/x
  3. Step 3: Cross multiply
    451,483.71x = 623,126.88 × 342,947.49
  4. Step 4: Simplify right side
    451,483.71x = 213,699,799,447.53
  5. Step 5: Solve for x
    x = 213,699,799,447.53/451,483.71
  6. Step 6: Final answer
    x = 473,327.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.