Home / 287,742,405.40-431,613,608.10-254,486,008.60

Finding the Fourth Proportional to 287,742,405.40, 431,613,608.10 and 254,486,008.60

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Solution

The fourth proportional to 287,742,405.40, 431,613,608.10 and 254,486,008.60 is: 381,729,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,742,405.40 : 431,613,608.10 = 254,486,008.60 : x
  2. Step 2: Convert to fraction form
    287,742,405.40/431,613,608.10 = 254,486,008.60/x
  3. Step 3: Cross multiply
    287,742,405.40x = 431,613,608.10 × 254,486,008.60
  4. Step 4: Simplify right side
    287,742,405.40x = 109,839,624,382,813,632
  5. Step 5: Solve for x
    x = 109,839,624,382,813,632/287,742,405.40
  6. Step 6: Final answer
    x = 381,729,012.90

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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.