Home / 712,777.12-983,606.64-406,869.28

Finding the Fourth Proportional to 712,777.12, 983,606.64 and 406,869.28

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Solution

The fourth proportional to 712,777.12, 983,606.64 and 406,869.28 is: 561,464.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,777.12 : 983,606.64 = 406,869.28 : x
  2. Step 2: Convert to fraction form
    712,777.12/983,606.64 = 406,869.28/x
  3. Step 3: Cross multiply
    712,777.12x = 983,606.64 × 406,869.28
  4. Step 4: Simplify right side
    712,777.12x = 400,199,325,420.02
  5. Step 5: Solve for x
    x = 400,199,325,420.02/712,777.12
  6. Step 6: Final answer
    x = 561,464.89

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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.