Home / 401,918,551.80-602,877,827.70-129,289,318.80

Finding the Fourth Proportional to 401,918,551.80, 602,877,827.70 and 129,289,318.80

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Solution

The fourth proportional to 401,918,551.80, 602,877,827.70 and 129,289,318.80 is: 193,933,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,918,551.80 : 602,877,827.70 = 129,289,318.80 : x
  2. Step 2: Convert to fraction form
    401,918,551.80/602,877,827.70 = 129,289,318.80/x
  3. Step 3: Cross multiply
    401,918,551.80x = 602,877,827.70 × 129,289,318.80
  4. Step 4: Simplify right side
    401,918,551.80x = 77,945,663,662,956,768
  5. Step 5: Solve for x
    x = 77,945,663,662,956,768/401,918,551.80
  6. Step 6: Final answer
    x = 193,933,978.20

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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.