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Finding the Fourth Proportional to 579,383.60, 869,075.40 and 558,388.40

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Solution

The fourth proportional to 579,383.60, 869,075.40 and 558,388.40 is: 837,582.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,383.60 : 869,075.40 = 558,388.40 : x
  2. Step 2: Convert to fraction form
    579,383.60/869,075.40 = 558,388.40/x
  3. Step 3: Cross multiply
    579,383.60x = 869,075.40 × 558,388.40
  4. Step 4: Simplify right side
    579,383.60x = 485,281,622,085.36
  5. Step 5: Solve for x
    x = 485,281,622,085.36/579,383.60
  6. Step 6: Final answer
    x = 837,582.60

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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.