Home / 420,719.10-584,511.74-415,674.57

Finding the Fourth Proportional to 420,719.10, 584,511.74 and 415,674.57

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Solution

The fourth proportional to 420,719.10, 584,511.74 and 415,674.57 is: 577,503.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,719.10 : 584,511.74 = 415,674.57 : x
  2. Step 2: Convert to fraction form
    420,719.10/584,511.74 = 415,674.57/x
  3. Step 3: Cross multiply
    420,719.10x = 584,511.74 × 415,674.57
  4. Step 4: Simplify right side
    420,719.10x = 242,966,666,184.45
  5. Step 5: Solve for x
    x = 242,966,666,184.45/420,719.10
  6. Step 6: Final answer
    x = 577,503.29

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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.