Home / 639,890,432.81-959,835,649.33-179,828,602.12

Finding the Fourth Proportional to 639,890,432.81, 959,835,649.33 and 179,828,602.12

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Solution

The fourth proportional to 639,890,432.81, 959,835,649.33 and 179,828,602.12 is: 269,742,903.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,890,432.81 : 959,835,649.33 = 179,828,602.12 : x
  2. Step 2: Convert to fraction form
    639,890,432.81/959,835,649.33 = 179,828,602.12/x
  3. Step 3: Cross multiply
    639,890,432.81x = 959,835,649.33 × 179,828,602.12
  4. Step 4: Simplify right side
    639,890,432.81x = 172,605,903,088,087,712
  5. Step 5: Solve for x
    x = 172,605,903,088,087,712/639,890,432.81
  6. Step 6: Final answer
    x = 269,742,903.22

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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.