Home / 662,949.16-914,826.76-390,954.70

Finding the Fourth Proportional to 662,949.16, 914,826.76 and 390,954.70

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Solution

The fourth proportional to 662,949.16, 914,826.76 and 390,954.70 is: 539,492.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,949.16 : 914,826.76 = 390,954.70 : x
  2. Step 2: Convert to fraction form
    662,949.16/914,826.76 = 390,954.70/x
  3. Step 3: Cross multiply
    662,949.16x = 914,826.76 × 390,954.70
  4. Step 4: Simplify right side
    662,949.16x = 357,655,821,673.92
  5. Step 5: Solve for x
    x = 357,655,821,673.92/662,949.16
  6. Step 6: Final answer
    x = 539,492.08

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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.