Home / 691,985.40-954,918.18-405,696.15

Finding the Fourth Proportional to 691,985.40, 954,918.18 and 405,696.15

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Solution

The fourth proportional to 691,985.40, 954,918.18 and 405,696.15 is: 559,847.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,985.40 : 954,918.18 = 405,696.15 : x
  2. Step 2: Convert to fraction form
    691,985.40/954,918.18 = 405,696.15/x
  3. Step 3: Cross multiply
    691,985.40x = 954,918.18 × 405,696.15
  4. Step 4: Simplify right side
    691,985.40x = 387,406,629,191.01
  5. Step 5: Solve for x
    x = 387,406,629,191.01/691,985.40
  6. Step 6: Final answer
    x = 559,847.98

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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.