Home / 712,520.42-983,251.71-390,233.16

Finding the Fourth Proportional to 712,520.42, 983,251.71 and 390,233.16

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Solution

The fourth proportional to 712,520.42, 983,251.71 and 390,233.16 is: 538,507.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,520.42 : 983,251.71 = 390,233.16 : x
  2. Step 2: Convert to fraction form
    712,520.42/983,251.71 = 390,233.16/x
  3. Step 3: Cross multiply
    712,520.42x = 983,251.71 × 390,233.16
  4. Step 4: Simplify right side
    712,520.42x = 383,697,421,868.70
  5. Step 5: Solve for x
    x = 383,697,421,868.70/712,520.42
  6. Step 6: Final answer
    x = 538,507.27

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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.