Home / 712,569.44-983,357.04-390,273.76

Finding the Fourth Proportional to 712,569.44, 983,357.04 and 390,273.76

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Solution

The fourth proportional to 712,569.44, 983,357.04 and 390,273.76 is: 538,583.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,569.44 : 983,357.04 = 390,273.76 : x
  2. Step 2: Convert to fraction form
    712,569.44/983,357.04 = 390,273.76/x
  3. Step 3: Cross multiply
    712,569.44x = 983,357.04 × 390,273.76
  4. Step 4: Simplify right side
    712,569.44x = 383,778,449,423.27
  5. Step 5: Solve for x
    x = 383,778,449,423.27/712,569.44
  6. Step 6: Final answer
    x = 538,583.93

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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.