Home / 287,581,011,921.40-431,371,517,882.10-120,008,736,412.60

Finding the Fourth Proportional to 287,581,011,921.40, 431,371,517,882.10 and 120,008,736,412.60

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Solution

The fourth proportional to 287,581,011,921.40, 431,371,517,882.10 and 120,008,736,412.60 is: 180,013,104,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,581,011,921.40 : 431,371,517,882.10 = 120,008,736,412.60 : x
  2. Step 2: Convert to fraction form
    287,581,011,921.40/431,371,517,882.10 = 120,008,736,412.60/x
  3. Step 3: Cross multiply
    287,581,011,921.40x = 431,371,517,882.10 × 120,008,736,412.60
  4. Step 4: Simplify right side
    287,581,011,921.40x = 51,768,350,785,416,110,014,464
  5. Step 5: Solve for x
    x = 51,768,350,785,416,110,014,464/287,581,011,921.40
  6. Step 6: Final answer
    x = 180,013,104,618.90

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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.