Home / 712,942.37-983,883.34-390,672.93

Finding the Fourth Proportional to 712,942.37, 983,883.34 and 390,672.93

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Solution

The fourth proportional to 712,942.37, 983,883.34 and 390,672.93 is: 539,141.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,942.37 : 983,883.34 = 390,672.93 : x
  2. Step 2: Convert to fraction form
    712,942.37/983,883.34 = 390,672.93/x
  3. Step 3: Cross multiply
    712,942.37x = 983,883.34 × 390,672.93
  4. Step 4: Simplify right side
    712,942.37x = 384,376,587,215.99
  5. Step 5: Solve for x
    x = 384,376,587,215.99/712,942.37
  6. Step 6: Final answer
    x = 539,141.18

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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.