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Finding the Fourth Proportional to 458,503.74, 686,492.01 and 345,842.87

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Solution

The fourth proportional to 458,503.74, 686,492.01 and 345,842.87 is: 517,811.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,503.74 : 686,492.01 = 345,842.87 : x
  2. Step 2: Convert to fraction form
    458,503.74/686,492.01 = 345,842.87/x
  3. Step 3: Cross multiply
    458,503.74x = 686,492.01 × 345,842.87
  4. Step 4: Simplify right side
    458,503.74x = 237,418,363,538.01
  5. Step 5: Solve for x
    x = 237,418,363,538.01/458,503.74
  6. Step 6: Final answer
    x = 517,811.18

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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.