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Finding the Fourth Proportional to 926,662.60, 1,387,661.10 and 609,401.80

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Solution

The fourth proportional to 926,662.60, 1,387,661.10 and 609,401.80 is: 912,568.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,662.60 : 1,387,661.10 = 609,401.80 : x
  2. Step 2: Convert to fraction form
    926,662.60/1,387,661.10 = 609,401.80/x
  3. Step 3: Cross multiply
    926,662.60x = 1,387,661.10 × 609,401.80
  4. Step 4: Simplify right side
    926,662.60x = 845,643,172,129.98
  5. Step 5: Solve for x
    x = 845,643,172,129.98/926,662.60
  6. Step 6: Final answer
    x = 912,568.58

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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.