Home / 425,831.07-587,688.30-318,214.20

Finding the Fourth Proportional to 425,831.07, 587,688.30 and 318,214.20

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Solution

The fourth proportional to 425,831.07, 587,688.30 and 318,214.20 is: 439,166.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,831.07 : 587,688.30 = 318,214.20 : x
  2. Step 2: Convert to fraction form
    425,831.07/587,688.30 = 318,214.20/x
  3. Step 3: Cross multiply
    425,831.07x = 587,688.30 × 318,214.20
  4. Step 4: Simplify right side
    425,831.07x = 187,010,762,233.86
  5. Step 5: Solve for x
    x = 187,010,762,233.86/425,831.07
  6. Step 6: Final answer
    x = 439,166.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.