Home / 530,289.58-731,814.87-288,587.45

Finding the Fourth Proportional to 530,289.58, 731,814.87 and 288,587.45

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Solution

The fourth proportional to 530,289.58, 731,814.87 and 288,587.45 is: 398,258.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,289.58 : 731,814.87 = 288,587.45 : x
  2. Step 2: Convert to fraction form
    530,289.58/731,814.87 = 288,587.45/x
  3. Step 3: Cross multiply
    530,289.58x = 731,814.87 × 288,587.45
  4. Step 4: Simplify right side
    530,289.58x = 211,192,587,205.38
  5. Step 5: Solve for x
    x = 211,192,587,205.38/530,289.58
  6. Step 6: Final answer
    x = 398,258.98

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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.