Home / 513,430.60-708,531.05-283,983.77

Finding the Fourth Proportional to 513,430.60, 708,531.05 and 283,983.77

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Solution

The fourth proportional to 513,430.60, 708,531.05 and 283,983.77 is: 391,895.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,430.60 : 708,531.05 = 283,983.77 : x
  2. Step 2: Convert to fraction form
    513,430.60/708,531.05 = 283,983.77/x
  3. Step 3: Cross multiply
    513,430.60x = 708,531.05 × 283,983.77
  4. Step 4: Simplify right side
    513,430.60x = 201,211,319,624.94
  5. Step 5: Solve for x
    x = 201,211,319,624.94/513,430.60
  6. Step 6: Final answer
    x = 391,895.85

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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.