Home / 685,911.85-946,715.85-456,478.84

Finding the Fourth Proportional to 685,911.85, 946,715.85 and 456,478.84

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Solution

The fourth proportional to 685,911.85, 946,715.85 and 456,478.84 is: 630,045.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,911.85 : 946,715.85 = 456,478.84 : x
  2. Step 2: Convert to fraction form
    685,911.85/946,715.85 = 456,478.84/x
  3. Step 3: Cross multiply
    685,911.85x = 946,715.85 × 456,478.84
  4. Step 4: Simplify right side
    685,911.85x = 432,155,754,201.01
  5. Step 5: Solve for x
    x = 432,155,754,201.01/685,911.85
  6. Step 6: Final answer
    x = 630,045.62

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Double scale
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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.