Home / 712,631.08-983,443.62-390,336.04

Finding the Fourth Proportional to 712,631.08, 983,443.62 and 390,336.04

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Solution

The fourth proportional to 712,631.08, 983,443.62 and 390,336.04 is: 538,670.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,631.08 : 983,443.62 = 390,336.04 : x
  2. Step 2: Convert to fraction form
    712,631.08/983,443.62 = 390,336.04/x
  3. Step 3: Cross multiply
    712,631.08x = 983,443.62 × 390,336.04
  4. Step 4: Simplify right side
    712,631.08x = 383,873,488,194.07
  5. Step 5: Solve for x
    x = 383,873,488,194.07/712,631.08
  6. Step 6: Final answer
    x = 538,670.71

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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.