Home / 639,323.60-958,985.40-266,075.60

Finding the Fourth Proportional to 639,323.60, 958,985.40 and 266,075.60

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Solution

The fourth proportional to 639,323.60, 958,985.40 and 266,075.60 is: 399,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,323.60 : 958,985.40 = 266,075.60 : x
  2. Step 2: Convert to fraction form
    639,323.60/958,985.40 = 266,075.60/x
  3. Step 3: Cross multiply
    639,323.60x = 958,985.40 × 266,075.60
  4. Step 4: Simplify right side
    639,323.60x = 255,162,615,696.24
  5. Step 5: Solve for x
    x = 255,162,615,696.24/639,323.60
  6. Step 6: Final answer
    x = 399,113.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.