Home / 862,565,884.80-1,292,967,028.80-425,193,878.40

Finding the Fourth Proportional to 862,565,884.80, 1,292,967,028.80 and 425,193,878.40

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Solution

The fourth proportional to 862,565,884.80, 1,292,967,028.80 and 425,193,878.40 is: 637,356,143.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,565,884.80 : 1,292,967,028.80 = 425,193,878.40 : x
  2. Step 2: Convert to fraction form
    862,565,884.80/1,292,967,028.80 = 425,193,878.40/x
  3. Step 3: Cross multiply
    862,565,884.80x = 1,292,967,028.80 × 425,193,878.40
  4. Step 4: Simplify right side
    862,565,884.80x = 549,761,665,618,796,416
  5. Step 5: Solve for x
    x = 549,761,665,618,796,416/862,565,884.80
  6. Step 6: Final answer
    x = 637,356,143.23

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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.