Home / 428,312.07-591,070.57-256,237.32

Finding the Fourth Proportional to 428,312.07, 591,070.57 and 256,237.32

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Solution

The fourth proportional to 428,312.07, 591,070.57 and 256,237.32 is: 353,607.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,312.07 : 591,070.57 = 256,237.32 : x
  2. Step 2: Convert to fraction form
    428,312.07/591,070.57 = 256,237.32/x
  3. Step 3: Cross multiply
    428,312.07x = 591,070.57 × 256,237.32
  4. Step 4: Simplify right side
    428,312.07x = 151,454,340,363.59
  5. Step 5: Solve for x
    x = 151,454,340,363.59/428,312.07
  6. Step 6: Final answer
    x = 353,607.45

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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.