Home / 530,127.57-731,559.36-288,403.98

Finding the Fourth Proportional to 530,127.57, 731,559.36 and 288,403.98

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Solution

The fourth proportional to 530,127.57, 731,559.36 and 288,403.98 is: 397,988.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,127.57 : 731,559.36 = 288,403.98 : x
  2. Step 2: Convert to fraction form
    530,127.57/731,559.36 = 288,403.98/x
  3. Step 3: Cross multiply
    530,127.57x = 731,559.36 × 288,403.98
  4. Step 4: Simplify right side
    530,127.57x = 210,984,631,030.25
  5. Step 5: Solve for x
    x = 210,984,631,030.25/530,127.57
  6. Step 6: Final answer
    x = 397,988.41

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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.