Home / 678,956.40-936,570.06-423,864.72

Finding the Fourth Proportional to 678,956.40, 936,570.06 and 423,864.72

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Solution

The fourth proportional to 678,956.40, 936,570.06 and 423,864.72 is: 584,689.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,956.40 : 936,570.06 = 423,864.72 : x
  2. Step 2: Convert to fraction form
    678,956.40/936,570.06 = 423,864.72/x
  3. Step 3: Cross multiply
    678,956.40x = 936,570.06 × 423,864.72
  4. Step 4: Simplify right side
    678,956.40x = 396,979,006,242.28
  5. Step 5: Solve for x
    x = 396,979,006,242.28/678,956.40
  6. Step 6: Final answer
    x = 584,689.98

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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.