Home / 438,273,085.60-657,409,628.40-211,780,669.60

Finding the Fourth Proportional to 438,273,085.60, 657,409,628.40 and 211,780,669.60

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Solution

The fourth proportional to 438,273,085.60, 657,409,628.40 and 211,780,669.60 is: 317,671,004.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,273,085.60 : 657,409,628.40 = 211,780,669.60 : x
  2. Step 2: Convert to fraction form
    438,273,085.60/657,409,628.40 = 211,780,669.60/x
  3. Step 3: Cross multiply
    438,273,085.60x = 657,409,628.40 × 211,780,669.60
  4. Step 4: Simplify right side
    438,273,085.60x = 139,226,651,304,039,168
  5. Step 5: Solve for x
    x = 139,226,651,304,039,168/438,273,085.60
  6. Step 6: Final answer
    x = 317,671,004.40

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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.