Home / 670,426.40-1,005,688.20-403,612.40

Finding the Fourth Proportional to 670,426.40, 1,005,688.20 and 403,612.40

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Solution

The fourth proportional to 670,426.40, 1,005,688.20 and 403,612.40 is: 605,447.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,426.40 : 1,005,688.20 = 403,612.40 : x
  2. Step 2: Convert to fraction form
    670,426.40/1,005,688.20 = 403,612.40/x
  3. Step 3: Cross multiply
    670,426.40x = 1,005,688.20 × 403,612.40
  4. Step 4: Simplify right side
    670,426.40x = 405,908,228,053.68
  5. Step 5: Solve for x
    x = 405,908,228,053.68/670,426.40
  6. Step 6: Final answer
    x = 605,447.86

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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.