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Finding the Fourth Proportional to 553,079.28, 830,113.40 and 283,391.40

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Solution

The fourth proportional to 553,079.28, 830,113.40 and 283,391.40 is: 425,340.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,079.28 : 830,113.40 = 283,391.40 : x
  2. Step 2: Convert to fraction form
    553,079.28/830,113.40 = 283,391.40/x
  3. Step 3: Cross multiply
    553,079.28x = 830,113.40 × 283,391.40
  4. Step 4: Simplify right side
    553,079.28x = 235,246,998,584.76
  5. Step 5: Solve for x
    x = 235,246,998,584.76/553,079.28
  6. Step 6: Final answer
    x = 425,340.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.