Home / 712,596.29-983,382.98-390,317.90

Finding the Fourth Proportional to 712,596.29, 983,382.98 and 390,317.90

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Solution

The fourth proportional to 712,596.29, 983,382.98 and 390,317.90 is: 538,638.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,596.29 : 983,382.98 = 390,317.90 : x
  2. Step 2: Convert to fraction form
    712,596.29/983,382.98 = 390,317.90/x
  3. Step 3: Cross multiply
    712,596.29x = 983,382.98 × 390,317.90
  4. Step 4: Simplify right side
    712,596.29x = 383,831,972,780.84
  5. Step 5: Solve for x
    x = 383,831,972,780.84/712,596.29
  6. Step 6: Final answer
    x = 538,638.75

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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.