Home / 657,785.40-907,746.66-355,979.40

Finding the Fourth Proportional to 657,785.40, 907,746.66 and 355,979.40

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Solution

The fourth proportional to 657,785.40, 907,746.66 and 355,979.40 is: 491,253.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,785.40 : 907,746.66 = 355,979.40 : x
  2. Step 2: Convert to fraction form
    657,785.40/907,746.66 = 355,979.40/x
  3. Step 3: Cross multiply
    657,785.40x = 907,746.66 × 355,979.40
  4. Step 4: Simplify right side
    657,785.40x = 323,139,111,378.80
  5. Step 5: Solve for x
    x = 323,139,111,378.80/657,785.40
  6. Step 6: Final answer
    x = 491,253.09

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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.