Home / 420,718.10-584,510.36-415,673.57

Finding the Fourth Proportional to 420,718.10, 584,510.36 and 415,673.57

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Solution

The fourth proportional to 420,718.10, 584,510.36 and 415,673.57 is: 577,501.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,718.10 : 584,510.36 = 415,673.57 : x
  2. Step 2: Convert to fraction form
    420,718.10/584,510.36 = 415,673.57/x
  3. Step 3: Cross multiply
    420,718.10x = 584,510.36 × 415,673.57
  4. Step 4: Simplify right side
    420,718.10x = 242,965,503,042.27
  5. Step 5: Solve for x
    x = 242,965,503,042.27/420,718.10
  6. Step 6: Final answer
    x = 577,501.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.