Home / 670,809.39-1,006,214.09-459,807.63

Finding the Fourth Proportional to 670,809.39, 1,006,214.09 and 459,807.63

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Solution

The fourth proportional to 670,809.39, 1,006,214.09 and 459,807.63 is: 689,711.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,809.39 : 1,006,214.09 = 459,807.63 : x
  2. Step 2: Convert to fraction form
    670,809.39/1,006,214.09 = 459,807.63/x
  3. Step 3: Cross multiply
    670,809.39x = 1,006,214.09 × 459,807.63
  4. Step 4: Simplify right side
    670,809.39x = 462,664,913,696.47
  5. Step 5: Solve for x
    x = 462,664,913,696.47/670,809.39
  6. Step 6: Final answer
    x = 689,711.45

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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.