Home / 689,280.55-951,066.37-402,745.26

Finding the Fourth Proportional to 689,280.55, 951,066.37 and 402,745.26

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Solution

The fourth proportional to 689,280.55, 951,066.37 and 402,745.26 is: 555,706.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,280.55 : 951,066.37 = 402,745.26 : x
  2. Step 2: Convert to fraction form
    689,280.55/951,066.37 = 402,745.26/x
  3. Step 3: Cross multiply
    689,280.55x = 951,066.37 × 402,745.26
  4. Step 4: Simplify right side
    689,280.55x = 383,037,472,462.91
  5. Step 5: Solve for x
    x = 383,037,472,462.91/689,280.55
  6. Step 6: Final answer
    x = 555,706.20

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Double scale
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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.