Home / 426,154,429.60-639,231,644.40-288,404,922.40

Finding the Fourth Proportional to 426,154,429.60, 639,231,644.40 and 288,404,922.40

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Solution

The fourth proportional to 426,154,429.60, 639,231,644.40 and 288,404,922.40 is: 432,607,383.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,154,429.60 : 639,231,644.40 = 288,404,922.40 : x
  2. Step 2: Convert to fraction form
    426,154,429.60/639,231,644.40 = 288,404,922.40/x
  3. Step 3: Cross multiply
    426,154,429.60x = 639,231,644.40 × 288,404,922.40
  4. Step 4: Simplify right side
    426,154,429.60x = 184,357,552,798,806,368
  5. Step 5: Solve for x
    x = 184,357,552,798,806,368/426,154,429.60
  6. Step 6: Final answer
    x = 432,607,383.60

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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.