Home / 530,394.77-731,962.76-288,686.12

Finding the Fourth Proportional to 530,394.77, 731,962.76 and 288,686.12

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Solution

The fourth proportional to 530,394.77, 731,962.76 and 288,686.12 is: 398,396.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,394.77 : 731,962.76 = 288,686.12 : x
  2. Step 2: Convert to fraction form
    530,394.77/731,962.76 = 288,686.12/x
  3. Step 3: Cross multiply
    530,394.77x = 731,962.76 × 288,686.12
  4. Step 4: Simplify right side
    530,394.77x = 211,307,484,065.65
  5. Step 5: Solve for x
    x = 211,307,484,065.65/530,394.77
  6. Step 6: Final answer
    x = 398,396.62

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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.