Home / 712,329.10-983,014.04-390,039.14

Finding the Fourth Proportional to 712,329.10, 983,014.04 and 390,039.14

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Solution

The fourth proportional to 712,329.10, 983,014.04 and 390,039.14 is: 538,253.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,329.10 : 983,014.04 = 390,039.14 : x
  2. Step 2: Convert to fraction form
    712,329.10/983,014.04 = 390,039.14/x
  3. Step 3: Cross multiply
    712,329.10x = 983,014.04 × 390,039.14
  4. Step 4: Simplify right side
    712,329.10x = 383,413,950,769.53
  5. Step 5: Solve for x
    x = 383,413,950,769.53/712,329.10
  6. Step 6: Final answer
    x = 538,253.95

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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.