Home / 712,617.35-983,412.19-390,332.82

Finding the Fourth Proportional to 712,617.35, 983,412.19 and 390,332.82

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Solution

The fourth proportional to 712,617.35, 983,412.19 and 390,332.82 is: 538,659.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,617.35 : 983,412.19 = 390,332.82 : x
  2. Step 2: Convert to fraction form
    712,617.35/983,412.19 = 390,332.82/x
  3. Step 3: Cross multiply
    712,617.35x = 983,412.19 × 390,332.82
  4. Step 4: Simplify right side
    712,617.35x = 383,858,057,520.79
  5. Step 5: Solve for x
    x = 383,858,057,520.79/712,617.35
  6. Step 6: Final answer
    x = 538,659.44

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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.