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Finding the Fourth Proportional to 570,302.84, 855,065.42 and 289,278.20

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Solution

The fourth proportional to 570,302.84, 855,065.42 and 289,278.20 is: 433,720.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,302.84 : 855,065.42 = 289,278.20 : x
  2. Step 2: Convert to fraction form
    570,302.84/855,065.42 = 289,278.20/x
  3. Step 3: Cross multiply
    570,302.84x = 855,065.42 × 289,278.20
  4. Step 4: Simplify right side
    570,302.84x = 247,351,785,579.84
  5. Step 5: Solve for x
    x = 247,351,785,579.84/570,302.84
  6. Step 6: Final answer
    x = 433,720.07

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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.