Home / 648,839.40-972,646.56-312,070.56

Finding the Fourth Proportional to 648,839.40, 972,646.56 and 312,070.56

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Solution

The fourth proportional to 648,839.40, 972,646.56 and 312,070.56 is: 467,811.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,839.40 : 972,646.56 = 312,070.56 : x
  2. Step 2: Convert to fraction form
    648,839.40/972,646.56 = 312,070.56/x
  3. Step 3: Cross multiply
    648,839.40x = 972,646.56 × 312,070.56
  4. Step 4: Simplify right side
    648,839.40x = 303,534,356,661.27
  5. Step 5: Solve for x
    x = 303,534,356,661.27/648,839.40
  6. Step 6: Final answer
    x = 467,811.23

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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.