Home / 530,129.14-731,579.95-288,411.66

Finding the Fourth Proportional to 530,129.14, 731,579.95 and 288,411.66

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Solution

The fourth proportional to 530,129.14, 731,579.95 and 288,411.66 is: 398,009.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,129.14 : 731,579.95 = 288,411.66 : x
  2. Step 2: Convert to fraction form
    530,129.14/731,579.95 = 288,411.66/x
  3. Step 3: Cross multiply
    530,129.14x = 731,579.95 × 288,411.66
  4. Step 4: Simplify right side
    530,129.14x = 210,996,187,802.22
  5. Step 5: Solve for x
    x = 210,996,187,802.22/530,129.14
  6. Step 6: Final answer
    x = 398,009.04

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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.