Home / 612,024.20-918,036.30-423,067.40

Finding the Fourth Proportional to 612,024.20, 918,036.30 and 423,067.40

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Solution

The fourth proportional to 612,024.20, 918,036.30 and 423,067.40 is: 634,601.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,024.20 : 918,036.30 = 423,067.40 : x
  2. Step 2: Convert to fraction form
    612,024.20/918,036.30 = 423,067.40/x
  3. Step 3: Cross multiply
    612,024.20x = 918,036.30 × 423,067.40
  4. Step 4: Simplify right side
    612,024.20x = 388,391,230,546.62
  5. Step 5: Solve for x
    x = 388,391,230,546.62/612,024.20
  6. Step 6: Final answer
    x = 634,601.10

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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.