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Finding the Fourth Proportional to 712,565.44, 983,351.52 and 390,269.76

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Solution

The fourth proportional to 712,565.44, 983,351.52 and 390,269.76 is: 538,578.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,565.44 : 983,351.52 = 390,269.76 : x
  2. Step 2: Convert to fraction form
    712,565.44/983,351.52 = 390,269.76/x
  3. Step 3: Cross multiply
    712,565.44x = 983,351.52 × 390,269.76
  4. Step 4: Simplify right side
    712,565.44x = 383,772,361,706.04
  5. Step 5: Solve for x
    x = 383,772,361,706.04/712,565.44
  6. Step 6: Final answer
    x = 538,578.41

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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.