Home / 528,409,785.60-792,331,243.20-221,354,985.60

Finding the Fourth Proportional to 528,409,785.60, 792,331,243.20 and 221,354,985.60

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Solution

The fourth proportional to 528,409,785.60, 792,331,243.20 and 221,354,985.60 is: 331,913,745.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,409,785.60 : 792,331,243.20 = 221,354,985.60 : x
  2. Step 2: Convert to fraction form
    528,409,785.60/792,331,243.20 = 221,354,985.60/x
  3. Step 3: Cross multiply
    528,409,785.60x = 792,331,243.20 × 221,354,985.60
  4. Step 4: Simplify right side
    528,409,785.60x = 175,386,470,928,966,112
  5. Step 5: Solve for x
    x = 175,386,470,928,966,112/528,409,785.60
  6. Step 6: Final answer
    x = 331,913,745.18

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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.