Home / 649,831.31-975,225.89-308,275.80

Finding the Fourth Proportional to 649,831.31, 975,225.89 and 308,275.80

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Solution

The fourth proportional to 649,831.31, 975,225.89 and 308,275.80 is: 462,640.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,831.31 : 975,225.89 = 308,275.80 : x
  2. Step 2: Convert to fraction form
    649,831.31/975,225.89 = 308,275.80/x
  3. Step 3: Cross multiply
    649,831.31x = 975,225.89 × 308,275.80
  4. Step 4: Simplify right side
    649,831.31x = 300,638,541,420.46
  5. Step 5: Solve for x
    x = 300,638,541,420.46/649,831.31
  6. Step 6: Final answer
    x = 462,640.90

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1.5x scale

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.