Home / 520,440.18-780,128.49-295,325.13

Finding the Fourth Proportional to 520,440.18, 780,128.49 and 295,325.13

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Solution

The fourth proportional to 520,440.18, 780,128.49 and 295,325.13 is: 442,685.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,440.18 : 780,128.49 = 295,325.13 : x
  2. Step 2: Convert to fraction form
    520,440.18/780,128.49 = 295,325.13/x
  3. Step 3: Cross multiply
    520,440.18x = 780,128.49 × 295,325.13
  4. Step 4: Simplify right side
    520,440.18x = 230,391,547,725.95
  5. Step 5: Solve for x
    x = 230,391,547,725.95/520,440.18
  6. Step 6: Final answer
    x = 442,685.94

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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.