Home / 487,819,089.76-731,642,138.63-221,862,506.41

Finding the Fourth Proportional to 487,819,089.76, 731,642,138.63 and 221,862,506.41

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Solution

The fourth proportional to 487,819,089.76, 731,642,138.63 and 221,862,506.41 is: 332,754,420.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,819,089.76 : 731,642,138.63 = 221,862,506.41 : x
  2. Step 2: Convert to fraction form
    487,819,089.76/731,642,138.63 = 221,862,506.41/x
  3. Step 3: Cross multiply
    487,819,089.76x = 731,642,138.63 × 221,862,506.41
  4. Step 4: Simplify right side
    487,819,089.76x = 162,323,958,671,069,824
  5. Step 5: Solve for x
    x = 162,323,958,671,069,824/487,819,089.76
  6. Step 6: Final answer
    x = 332,754,420.81

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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.