Home / 823,210.60-1,234,124.70-429,226.60

Finding the Fourth Proportional to 823,210.60, 1,234,124.70 and 429,226.60

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Solution

The fourth proportional to 823,210.60, 1,234,124.70 and 429,226.60 is: 643,479.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,210.60 : 1,234,124.70 = 429,226.60 : x
  2. Step 2: Convert to fraction form
    823,210.60/1,234,124.70 = 429,226.60/x
  3. Step 3: Cross multiply
    823,210.60x = 1,234,124.70 × 429,226.60
  4. Step 4: Simplify right side
    823,210.60x = 529,719,148,957.02
  5. Step 5: Solve for x
    x = 529,719,148,957.02/823,210.60
  6. Step 6: Final answer
    x = 643,479.50

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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.