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Finding the Fourth Proportional to 579,811.70, 869,717.55 and 367,235.30

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Solution

The fourth proportional to 579,811.70, 869,717.55 and 367,235.30 is: 550,852.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,811.70 : 869,717.55 = 367,235.30 : x
  2. Step 2: Convert to fraction form
    579,811.70/869,717.55 = 367,235.30/x
  3. Step 3: Cross multiply
    579,811.70x = 869,717.55 × 367,235.30
  4. Step 4: Simplify right side
    579,811.70x = 319,390,985,389.52
  5. Step 5: Solve for x
    x = 319,390,985,389.52/579,811.70
  6. Step 6: Final answer
    x = 550,852.95

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Half scale
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Double scale
Find fourth proportional to 579,812.70, 869,719.05 and 367,236.30
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.