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Finding the Fourth Proportional to 661,810.80, 992,716.20 and 476,569.20

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Solution

The fourth proportional to 661,810.80, 992,716.20 and 476,569.20 is: 714,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,810.80 : 992,716.20 = 476,569.20 : x
  2. Step 2: Convert to fraction form
    661,810.80/992,716.20 = 476,569.20/x
  3. Step 3: Cross multiply
    661,810.80x = 992,716.20 × 476,569.20
  4. Step 4: Simplify right side
    661,810.80x = 473,097,965,261.04
  5. Step 5: Solve for x
    x = 473,097,965,261.04/661,810.80
  6. Step 6: Final answer
    x = 714,853.80

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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.