Home / 713,710.43-984,933.02-391,417.70

Finding the Fourth Proportional to 713,710.43, 984,933.02 and 391,417.70

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Solution

The fourth proportional to 713,710.43, 984,933.02 and 391,417.70 is: 540,163.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,710.43 : 984,933.02 = 391,417.70 : x
  2. Step 2: Convert to fraction form
    713,710.43/984,933.02 = 391,417.70/x
  3. Step 3: Cross multiply
    713,710.43x = 984,933.02 × 391,417.70
  4. Step 4: Simplify right side
    713,710.43x = 385,520,210,460.70
  5. Step 5: Solve for x
    x = 385,520,210,460.70/713,710.43
  6. Step 6: Final answer
    x = 540,163.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.