Home / 890,306.16-1,228,616.28-487,889.52

Finding the Fourth Proportional to 890,306.16, 1,228,616.28 and 487,889.52

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Solution

The fourth proportional to 890,306.16, 1,228,616.28 and 487,889.52 is: 673,284.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,306.16 : 1,228,616.28 = 487,889.52 : x
  2. Step 2: Convert to fraction form
    890,306.16/1,228,616.28 = 487,889.52/x
  3. Step 3: Cross multiply
    890,306.16x = 1,228,616.28 × 487,889.52
  4. Step 4: Simplify right side
    890,306.16x = 599,429,007,113.39
  5. Step 5: Solve for x
    x = 599,429,007,113.39/890,306.16
  6. Step 6: Final answer
    x = 673,284.13

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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.