Home / 685,858.04-946,499.28-391,501.70

Finding the Fourth Proportional to 685,858.04, 946,499.28 and 391,501.70

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Solution

The fourth proportional to 685,858.04, 946,499.28 and 391,501.70 is: 540,281.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,858.04 : 946,499.28 = 391,501.70 : x
  2. Step 2: Convert to fraction form
    685,858.04/946,499.28 = 391,501.70/x
  3. Step 3: Cross multiply
    685,858.04x = 946,499.28 × 391,501.70
  4. Step 4: Simplify right side
    685,858.04x = 370,556,077,168.78
  5. Step 5: Solve for x
    x = 370,556,077,168.78/685,858.04
  6. Step 6: Final answer
    x = 540,281.01

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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.