Home / 712,696.50-983,521.35-390,418.06

Finding the Fourth Proportional to 712,696.50, 983,521.35 and 390,418.06

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Solution

The fourth proportional to 712,696.50, 983,521.35 and 390,418.06 is: 538,777.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,696.50 : 983,521.35 = 390,418.06 : x
  2. Step 2: Convert to fraction form
    712,696.50/983,521.35 = 390,418.06/x
  3. Step 3: Cross multiply
    712,696.50x = 983,521.35 × 390,418.06
  4. Step 4: Simplify right side
    712,696.50x = 383,984,490,565.88
  5. Step 5: Solve for x
    x = 383,984,490,565.88/712,696.50
  6. Step 6: Final answer
    x = 538,777.01

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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.