Home / 670,724.14-1,006,088.36-420,881.26

Finding the Fourth Proportional to 670,724.14, 1,006,088.36 and 420,881.26

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Solution

The fourth proportional to 670,724.14, 1,006,088.36 and 420,881.26 is: 631,323.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,724.14 : 1,006,088.36 = 420,881.26 : x
  2. Step 2: Convert to fraction form
    670,724.14/1,006,088.36 = 420,881.26/x
  3. Step 3: Cross multiply
    670,724.14x = 1,006,088.36 × 420,881.26
  4. Step 4: Simplify right side
    670,724.14x = 423,443,736,628.13
  5. Step 5: Solve for x
    x = 423,443,736,628.13/670,724.14
  6. Step 6: Final answer
    x = 631,323.24

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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.