Home / 753,615.81-1,039,417.23-521,429.31

Finding the Fourth Proportional to 753,615.81, 1,039,417.23 and 521,429.31

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Solution

The fourth proportional to 753,615.81, 1,039,417.23 and 521,429.31 is: 719,176.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,615.81 : 1,039,417.23 = 521,429.31 : x
  2. Step 2: Convert to fraction form
    753,615.81/1,039,417.23 = 521,429.31/x
  3. Step 3: Cross multiply
    753,615.81x = 1,039,417.23 × 521,429.31
  4. Step 4: Simplify right side
    753,615.81x = 541,982,609,041.01
  5. Step 5: Solve for x
    x = 541,982,609,041.01/753,615.81
  6. Step 6: Final answer
    x = 719,176.27

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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.