Home / 829,332.70-1,243,999.05-409,428.70

Finding the Fourth Proportional to 829,332.70, 1,243,999.05 and 409,428.70

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Solution

The fourth proportional to 829,332.70, 1,243,999.05 and 409,428.70 is: 614,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,332.70 : 1,243,999.05 = 409,428.70 : x
  2. Step 2: Convert to fraction form
    829,332.70/1,243,999.05 = 409,428.70/x
  3. Step 3: Cross multiply
    829,332.70x = 1,243,999.05 × 409,428.70
  4. Step 4: Simplify right side
    829,332.70x = 509,328,913,842.74
  5. Step 5: Solve for x
    x = 509,328,913,842.74/829,332.70
  6. Step 6: Final answer
    x = 614,143.05

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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.