Home / 688,021.96-949,501.82-382,099.70

Finding the Fourth Proportional to 688,021.96, 949,501.82 and 382,099.70

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Solution

The fourth proportional to 688,021.96, 949,501.82 and 382,099.70 is: 527,315.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,021.96 : 949,501.82 = 382,099.70 : x
  2. Step 2: Convert to fraction form
    688,021.96/949,501.82 = 382,099.70/x
  3. Step 3: Cross multiply
    688,021.96x = 949,501.82 × 382,099.70
  4. Step 4: Simplify right side
    688,021.96x = 362,804,356,779.19
  5. Step 5: Solve for x
    x = 362,804,356,779.19/688,021.96
  6. Step 6: Final answer
    x = 527,315.08

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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.