Home / 664,583.40-996,875.10-310,289.40

Finding the Fourth Proportional to 664,583.40, 996,875.10 and 310,289.40

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Solution

The fourth proportional to 664,583.40, 996,875.10 and 310,289.40 is: 465,434.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,583.40 : 996,875.10 = 310,289.40 : x
  2. Step 2: Convert to fraction form
    664,583.40/996,875.10 = 310,289.40/x
  3. Step 3: Cross multiply
    664,583.40x = 996,875.10 × 310,289.40
  4. Step 4: Simplify right side
    664,583.40x = 309,319,776,653.94
  5. Step 5: Solve for x
    x = 309,319,776,653.94/664,583.40
  6. Step 6: Final answer
    x = 465,434.10

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Half scale
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Double scale
Find fourth proportional to 664,584.40, 996,876.60 and 310,290.40
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.