Home / 662,803.45-914,772.63-390,901.23

Finding the Fourth Proportional to 662,803.45, 914,772.63 and 390,901.23

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Solution

The fourth proportional to 662,803.45, 914,772.63 and 390,901.23 is: 539,504.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,803.45 : 914,772.63 = 390,901.23 : x
  2. Step 2: Convert to fraction form
    662,803.45/914,772.63 = 390,901.23/x
  3. Step 3: Cross multiply
    662,803.45x = 914,772.63 × 390,901.23
  4. Step 4: Simplify right side
    662,803.45x = 357,585,748,524.27
  5. Step 5: Solve for x
    x = 357,585,748,524.27/662,803.45
  6. Step 6: Final answer
    x = 539,504.96

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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.