Home / 878,785.07-1,212,666.03-491,533.38

Finding the Fourth Proportional to 878,785.07, 1,212,666.03 and 491,533.38

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Solution

The fourth proportional to 878,785.07, 1,212,666.03 and 491,533.38 is: 678,283.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,785.07 : 1,212,666.03 = 491,533.38 : x
  2. Step 2: Convert to fraction form
    878,785.07/1,212,666.03 = 491,533.38/x
  3. Step 3: Cross multiply
    878,785.07x = 1,212,666.03 × 491,533.38
  4. Step 4: Simplify right side
    878,785.07x = 596,065,832,537.08
  5. Step 5: Solve for x
    x = 596,065,832,537.08/878,785.07
  6. Step 6: Final answer
    x = 678,283.98

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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.