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Finding the Fourth Proportional to 976,763.60, 1,465,404.60 and 345,611.60

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Solution

The fourth proportional to 976,763.60, 1,465,404.60 and 345,611.60 is: 518,509.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,763.60 : 1,465,404.60 = 345,611.60 : x
  2. Step 2: Convert to fraction form
    976,763.60/1,465,404.60 = 345,611.60/x
  3. Step 3: Cross multiply
    976,763.60x = 1,465,404.60 × 345,611.60
  4. Step 4: Simplify right side
    976,763.60x = 506,460,828,453.36
  5. Step 5: Solve for x
    x = 506,460,828,453.36/976,763.60
  6. Step 6: Final answer
    x = 518,509.11

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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.