Home / 696,154.23-960,685.11-390,280.41

Finding the Fourth Proportional to 696,154.23, 960,685.11 and 390,280.41

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Solution

The fourth proportional to 696,154.23, 960,685.11 and 390,280.41 is: 538,582.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,154.23 : 960,685.11 = 390,280.41 : x
  2. Step 2: Convert to fraction form
    696,154.23/960,685.11 = 390,280.41/x
  3. Step 3: Cross multiply
    696,154.23x = 960,685.11 × 390,280.41
  4. Step 4: Simplify right side
    696,154.23x = 374,936,578,611.70
  5. Step 5: Solve for x
    x = 374,936,578,611.70/696,154.23
  6. Step 6: Final answer
    x = 538,582.63

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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.