Home / 423,931.74-634,513.05-311,582.22

Finding the Fourth Proportional to 423,931.74, 634,513.05 and 311,582.22

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Solution

The fourth proportional to 423,931.74, 634,513.05 and 311,582.22 is: 466,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,931.74 : 634,513.05 = 311,582.22 : x
  2. Step 2: Convert to fraction form
    423,931.74/634,513.05 = 311,582.22/x
  3. Step 3: Cross multiply
    423,931.74x = 634,513.05 × 311,582.22
  4. Step 4: Simplify right side
    423,931.74x = 197,702,984,737.97
  5. Step 5: Solve for x
    x = 197,702,984,737.97/423,931.74
  6. Step 6: Final answer
    x = 466,355.70

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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.