Home / 530,298.72-731,790.45-288,582.30

Finding the Fourth Proportional to 530,298.72, 731,790.45 and 288,582.30

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Solution

The fourth proportional to 530,298.72, 731,790.45 and 288,582.30 is: 398,231.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,298.72 : 731,790.45 = 288,582.30 : x
  2. Step 2: Convert to fraction form
    530,298.72/731,790.45 = 288,582.30/x
  3. Step 3: Cross multiply
    530,298.72x = 731,790.45 × 288,582.30
  4. Step 4: Simplify right side
    530,298.72x = 211,181,771,179.04
  5. Step 5: Solve for x
    x = 211,181,771,179.04/530,298.72
  6. Step 6: Final answer
    x = 398,231.72

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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.