Home / 820,428.86-1,132,248.66-457,923.44

Finding the Fourth Proportional to 820,428.86, 1,132,248.66 and 457,923.44

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Solution

The fourth proportional to 820,428.86, 1,132,248.66 and 457,923.44 is: 631,966.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,428.86 : 1,132,248.66 = 457,923.44 : x
  2. Step 2: Convert to fraction form
    820,428.86/1,132,248.66 = 457,923.44/x
  3. Step 3: Cross multiply
    820,428.86x = 1,132,248.66 × 457,923.44
  4. Step 4: Simplify right side
    820,428.86x = 518,483,201,322.59
  5. Step 5: Solve for x
    x = 518,483,201,322.59/820,428.86
  6. Step 6: Final answer
    x = 631,966.07

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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.